diff --git a/apps/client/src/stylesheets/style.css b/apps/client/src/stylesheets/style.css
index 71f0f7fd68..1babd999fe 100644
--- a/apps/client/src/stylesheets/style.css
+++ b/apps/client/src/stylesheets/style.css
@@ -1158,6 +1158,33 @@ a.external:not(.no-arrow):after, a[href^="http://"]:not(.no-arrow):after, a[href
     margin: 0 12px;
 }
 
+.modal-content-with-sidebar {
+    flex-direction: row !important;
+}
+
+.modal-content-with-sidebar > .modal-sidebar {
+    display: flex;
+    flex-direction: column;
+    border-right: 1px solid var(--main-border-color);
+    overflow: auto;
+    flex-shrink: 0;
+}
+
+.modal-content-with-sidebar > .modal-main {
+    display: flex;
+    flex-direction: column;
+    flex-grow: 1;
+    min-width: 0;
+    min-height: 0;
+    overflow: hidden;
+}
+
+.modal-content-with-sidebar > .modal-main > .modal-body {
+    overflow: auto;
+    flex-grow: 1;
+    min-height: 0;
+}
+
 .ck-mentions .ck-button {
     font-size: var(--detail-font-size) !important;
     padding: 5px;
diff --git a/apps/client/src/widgets/dialogs/revisions.css b/apps/client/src/widgets/dialogs/revisions.css
index ba5cd3f869..2a7eb8137a 100644
--- a/apps/client/src/widgets/dialogs/revisions.css
+++ b/apps/client/src/widgets/dialogs/revisions.css
@@ -103,12 +103,17 @@ body.desktop .revisions-dialog {
         opacity: 0.6;
     }
 
+    .modal-content {
+        height: 80vh;
+    }
+
     .revision-content-wrapper {
         flex-grow: 1;
-        margin-inline: 20px;
+        padding-inline: 20px;
         display: flex;
         flex-direction: column;
         min-width: 0;
+        overflow: auto;
     }
 
     .revision-toolbar-separator {
diff --git a/apps/client/src/widgets/dialogs/revisions.tsx b/apps/client/src/widgets/dialogs/revisions.tsx
index 4807ee6269..9af385a589 100644
--- a/apps/client/src/widgets/dialogs/revisions.tsx
+++ b/apps/client/src/widgets/dialogs/revisions.tsx
@@ -67,7 +67,6 @@ export default function RevisionsDialog() {
             size="xl"
             title={t("revisions.note_revisions")}
             helpPageId="vZWERwf8U3nx"
-            bodyStyle={{ display: "flex", height: "80vh" }}
             header={note && (
                 <RevisionsMenu
                     note={note}
@@ -82,6 +81,18 @@ export default function RevisionsDialog() {
                     hasRevisions={!!revisions?.length}
                 />
             )}
+            sidebar={
+                <RevisionsList
+                    revisions={revisions ?? []}
+                    onSelect={(revisionId) => {
+                        const correspondingRevision = (revisions ?? []).find((r) => r.revisionId === revisionId);
+                        if (correspondingRevision) {
+                            setCurrentRevision(correspondingRevision);
+                        }
+                    }}
+                    currentRevision={currentRevision}
+                />
+            }
             onHidden={() => {
                 setShown(false);
                 setShowDiff(false);
@@ -91,17 +102,6 @@ export default function RevisionsDialog() {
             }}
             show={shown}
         >
-            <RevisionsList
-                revisions={revisions ?? []}
-                onSelect={(revisionId) => {
-                    const correspondingRevision = (revisions ?? []).find((r) => r.revisionId === revisionId);
-                    if (correspondingRevision) {
-                        setCurrentRevision(correspondingRevision);
-                    }
-                }}
-                currentRevision={currentRevision}
-            />
-
             <div className="revision-content-wrapper">
                 <RevisionPreview
                     noteContent={noteContent}
diff --git a/apps/client/src/widgets/react/Modal.tsx b/apps/client/src/widgets/react/Modal.tsx
index bd1c052ab7..eaef4c2fa9 100644
--- a/apps/client/src/widgets/react/Modal.tsx
+++ b/apps/client/src/widgets/react/Modal.tsx
@@ -77,9 +77,15 @@ export interface ModalProps {
      * If true, the modal will not focus itself after becoming visible.
      */
     noFocus?: boolean;
+    /**
+     * Content to display as a full-height sidebar on the left side of the modal.
+     * When set, the modal layout switches to a horizontal split with the sidebar
+     * spanning the entire height alongside the header, body and footer.
+     */
+    sidebar?: ComponentChildren;
 }
 
-export default function Modal({ children, className, size, title, customTitleBarButtons: titleBarButtons, header, footer, footerStyle, footerAlignment, onShown, onSubmit, helpPageId, minWidth, maxWidth, zIndex, scrollable, onHidden, modalRef: externalModalRef, formRef, bodyStyle, show, stackable, keepInDom, noFocus }: ModalProps) {
+export default function Modal({ children, className, size, title, customTitleBarButtons: titleBarButtons, header, footer, footerStyle, footerAlignment, onShown, onSubmit, helpPageId, minWidth, maxWidth, zIndex, scrollable, onHidden, modalRef: externalModalRef, formRef, bodyStyle, show, stackable, keepInDom, noFocus, sidebar }: ModalProps) {
     const modalRef = useSyncedRef<HTMLDivElement>(externalModalRef);
     const modalInstanceRef = useRef<BootstrapModal>();
     const elementToFocus = useRef<Element | null>();
@@ -144,41 +150,44 @@ export default function Modal({ children, className, size, title, customTitleBar
     return (
         <div className={`modal fade mx-auto ${className}`} tabIndex={-1} style={dialogStyle} role="dialog" ref={modalRef}>
             {(show || keepInDom) && <div className={`modal-dialog modal-${size} ${scrollable ? "modal-dialog-scrollable" : ""}`} style={documentStyle} role="document">
-                <div className="modal-content">
-                    <div className="modal-header">
-                        {!title || typeof title === "string" ? (
-                            <h5 className="modal-title">{title ?? <>&nbsp;</>}</h5>
+                <div className={clsx("modal-content", sidebar && "modal-content-with-sidebar")}>
+                    {sidebar && <div className="modal-sidebar">{sidebar}</div>}
+                    <div className="modal-main">
+                        <div className="modal-header">
+                            {!title || typeof title === "string" ? (
+                                <h5 className="modal-title">{title ?? <>&nbsp;</>}</h5>
+                            ) : (
+                                title
+                            )}
+                            {header}
+                            {helpPageId && (
+                                <button className="help-button" type="button" data-in-app-help={helpPageId} title={t("modal.help_title")}>?</button>
+                            )}
+
+                            {titleBarButtons?.filter((b) => b !== null).map((titleBarButton) => (
+                                <button type="button"
+                                    className={clsx("custom-title-bar-button bx", titleBarButton.iconClassName)}
+                                    title={titleBarButton.title}
+                                    onClick={titleBarButton.onClick} />
+                            ))}
+
+                            <button type="button" className="btn-close" data-bs-dismiss="modal" aria-label={t("modal.close")} />
+
+                        </div>
+
+                        {onSubmit ? (
+                            <form ref={formRef} onSubmit={(e) => {
+                                e.preventDefault();
+                                onSubmit();
+                            }}>
+                                <ModalInner footer={footer} bodyStyle={bodyStyle} footerStyle={footerStyle} footerAlignment={footerAlignment}>{children}</ModalInner>
+                            </form>
                         ) : (
-                            title
+                            <ModalInner footer={footer} bodyStyle={bodyStyle} footerStyle={footerStyle} footerAlignment={footerAlignment}>
+                                {children}
+                            </ModalInner>
                         )}
-                        {header}
-                        {helpPageId && (
-                            <button className="help-button" type="button" data-in-app-help={helpPageId} title={t("modal.help_title")}>?</button>
-                        )}
-
-                        {titleBarButtons?.filter((b) => b !== null).map((titleBarButton) => (
-                            <button type="button"
-                                className={clsx("custom-title-bar-button bx", titleBarButton.iconClassName)}
-                                title={titleBarButton.title}
-                                onClick={titleBarButton.onClick} />
-                        ))}
-
-                        <button type="button" className="btn-close" data-bs-dismiss="modal" aria-label={t("modal.close")} />
-
                     </div>
-
-                    {onSubmit ? (
-                        <form ref={formRef} onSubmit={(e) => {
-                            e.preventDefault();
-                            onSubmit();
-                        }}>
-                            <ModalInner footer={footer} bodyStyle={bodyStyle} footerStyle={footerStyle} footerAlignment={footerAlignment}>{children}</ModalInner>
-                        </form>
-                    ) : (
-                        <ModalInner footer={footer} bodyStyle={bodyStyle} footerStyle={footerStyle} footerAlignment={footerAlignment}>
-                            {children}
-                        </ModalInner>
-                    )}
                 </div>
             </div>}
         </div>