diff --git a/app/src/layout/dock/Files.ts b/app/src/layout/dock/Files.ts
index 8156f228f..441b2dff6 100644
--- a/app/src/layout/dock/Files.ts
+++ b/app/src/layout/dock/Files.ts
@@ -455,7 +455,7 @@ export class Files extends Model {
             window.siyuan.dragElement = undefined;
         });
         this.element.addEventListener("dragover", (event: DragEvent & { target: HTMLElement }) => {
-            if (window.siyuan.config.readonly) {
+            if (window.siyuan.config.readonly || event.dataTransfer.types.includes(Constants.SIYUAN_DROP_TAB)) {
                 return;
             }
             const contentRect = this.element.getBoundingClientRect();
@@ -760,7 +760,7 @@ export class Files extends Model {
         } else {
             return `<ul class="b3-list b3-list--background" data-url="${item.id}" data-sort="${item.sort}" data-sortmode="${item.sortMode}">
 <li class="b3-list-item b3-list-item--hide-action" ${window.siyuan.config.fileTree.sort === 6 ? 'draggable="true"' : ""} 
-style="--file-toggle-width:0px" 
+style="--file-toggle-width:18px" 
 data-type="navigation-root" data-path="/">
     <span class="b3-list-item__toggle b3-list-item__toggle--hl">
         <svg class="b3-list-item__arrow"><use xlink:href="#iconRight"></use></svg>
@@ -1181,12 +1181,12 @@ data-type="navigation-root" data-path="/">
             countHTML = `<span class="popover__block counter b3-tooltips b3-tooltips__nw" aria-label="${window.siyuan.languages.ref}">${item.count}</span>`;
         }
         const ariaLabel = this.genDocAriaLabel(item, escapeAriaLabel);
-        const paddingLeft = `${(item.path.split("/").length - 1) * 18}px`
+        const paddingLeft = (item.path.split("/").length - 1) * 18
         return `<li data-node-id="${item.id}" data-name="${Lute.EscapeHTMLStr(item.name)}" draggable="true" data-count="${item.subFileCount}" 
 data-type="navigation-file" 
-style="--file-toggle-width:${paddingLeft}" 
+style="--file-toggle-width:${paddingLeft + 18}px" 
 class="b3-list-item b3-list-item--hide-action" data-path="${item.path}">
-    <span style="padding-left: ${paddingLeft}" class="b3-list-item__toggle b3-list-item__toggle--hl${item.subFileCount === 0 ? " fn__hidden" : ""}">
+    <span style="padding-left: ${paddingLeft}px" class="b3-list-item__toggle b3-list-item__toggle--hl${item.subFileCount === 0 ? " fn__hidden" : ""}">
         <svg class="b3-list-item__arrow"><use xlink:href="#iconRight"></use></svg>
     </span>
     <span class="b3-list-item__icon b3-tooltips b3-tooltips__n popover__block" data-id="${item.id}" aria-label="${window.siyuan.languages.changeIcon}">${unicode2Emoji(item.icon || (item.subFileCount === 0 ? window.siyuan.storage[Constants.LOCAL_IMAGES].file : window.siyuan.storage[Constants.LOCAL_IMAGES].folder))}</span>