Tree gets empty after zooming

[isidorn]

Steps: sorry but no real steps. I get into this situation with the combination of
zooming in, reseting zoom, showing / hiding sidebar
and having a file open which is not in the explorer (so it does not get revelaed)

Assigning to december since it is rather bad (reload only helps)

Here's the full HTML of the tree I was able to copy from chrome

<div class="monaco-list mouse-support list_id_1 element-focused selection-single" role="tree" tabindex="0" aria-label="Files Explorer. Use the navigation keys to navigate." data-keybinding-context="3" aria-activedescendant="list_id_1_49"><div class="monaco-scrollable-element  mac" role="presentation" style="position: relative; overflow: hidden;"><div class="monaco-list-rows" style="overflow: hidden; top: -889px; height: 1342px; transform: translate3d(0px, 0px, 0px);"><div class="monaco-list-row" data-index="0" data-last-element="false" aria-setsize="61" aria-posinset="1" role="treeitem" id="list_id_1_0" aria-label=".github" aria-level="1" draggable="true" style="top: 0px; height: 22px; line-height: 22px;"><div class="monaco-tl-row"><div class="monaco-tl-twistie collapsible collapsed" style="margin-left: 8px;"></div><div class="monaco-tl-contents"><div class="monaco-icon-label folder-icon .github-name-folder-icon explorer-item" title="~/Development/vscode/.github" style="display: flex;"><div class="monaco-icon-label-description-container"><a class="label-name"><span class="monaco-highlighted-label" title="~/Development/vscode/.github"><span>.github</span></span></a></div></div></div></div></div><div class="monaco-list-row selected" data-index="1" data-last-element="false" aria-setsize="61" aria-posinset="2" role="treeitem" id="list_id_1_1" aria-label=".vscode" aria-level="1" draggable="true" style="top: 22px; height: 22px; line-height: 22px;"><div class="monaco-tl-row"><div class="monaco-tl-twistie collapsible" style="margin-left: 8px;"></div><div class="monaco-tl-contents"><div class="monaco-icon-label folder-icon .vscode-name-folder-icon explorer-item" title="~/Development/vscode/.vscode" style="display: flex;"><div class="monaco-icon-label-description-container"><a class="label-name"><span class="monaco-highlighted-label" title="~/Development/vscode/.vscode"><span>.vscode</span></span></a></div></div></div></div></div><div class="monaco-list-row" data-index="2" data-last-element="false" aria-setsize="61" aria-posinset="3" role="treeitem" id="list_id_1_2" aria-label="cglicenses.schema.json" aria-level="2" draggable="true" style="top: 44px; height: 22px; line-height: 22px;"><div class="monaco-tl-row"><div class="monaco-tl-twistie" style="margin-left: 16px;"></div><div class="monaco-tl-contents"><div class="monaco-icon-label file-icon cglicenses.schema.json-name-file-icon schema.json-ext-file-icon json-ext-file-icon ext-file-icon json-lang-file-icon explorer-item" title="~/Development/vscode/.vscode/cglicenses.schema.json" style="display: flex;"><div class="monaco-icon-label-description-container"><a class="label-name"><span class="monaco-highlighted-label" title="~/Development/vscode/.vscode/cglicenses.schema.json"><span>cglicenses.schema.json</span></span></a></div></div></div></div></div><div class="monaco-list-row" data-index="3" data-last-element="false" aria-setsize="61" aria-posinset="4" role="treeitem" id="list_id_1_3" aria-label="cgmanifest.schema.json" aria-level="2" draggable="true" style="top: 66px; height: 22px; line-height: 22px;"><div class="monaco-tl-row"><div class="monaco-tl-twistie" style="margin-left: 16px;"></div><div class="monaco-tl-contents"><div class="monaco-icon-label file-icon cgmanifest.schema.json-name-file-icon schema.json-ext-file-icon json-ext-file-icon ext-file-icon json-lang-file-icon explorer-item" title="~/Development/vscode/.vscode/cgmanifest.schema.json" style="display: flex;"><div class="monaco-icon-label-description-container"><a class="label-name"><span class="monaco-highlighted-label" title="~/Development/vscode/.vscode/cgmanifest.schema.json"><span>cgmanifest.schema.json</span></span></a></div></div></div></div></div><div class="monaco-list-row" data-index="4" data-last-element="false" aria-setsize="61" aria-posinset="5" role="treeitem" id="list_id_1_4" aria-label="extensions.json" aria-level="2" draggable="true" style="top: 88px; height: 22px; line-height: 22px;"><div class="monaco-tl-row"><div class="monaco-tl-twistie" style="margin-left: 16px;"></div><div class="monaco-tl-contents"><div class="monaco-icon-label file-icon extensions.json-name-file-icon json-ext-file-icon ext-file-icon jsonc-lang-file-icon explorer-item" title="~/Development/vscode/.vscode/extensions.json" style="display: flex;"><div class="monaco-icon-label-description-container"><a class="label-name"><span class="monaco-highlighted-label" title="~/Development/vscode/.vscode/extensions.json"><span>extensions.json</span></span></a></div></div></div></div></div><div class="monaco-list-row" data-index="5" data-last-element="false" aria-setsize="61" aria-posinset="6" role="treeitem" id="list_id_1_5" aria-label="launch.json" aria-level="2" draggable="true" style="top: 110px; height: 22px; line-height: 22px;"><div class="monaco-tl-row"><div class="monaco-tl-twistie" style="margin-left: 16px;"></div><div class="monaco-tl-contents"><div class="monaco-icon-label file-icon launch.json-name-file-icon json-ext-file-icon ext-file-icon jsonc-lang-file-icon explorer-item" title="~/Development/vscode/.vscode/launch.json" style="display: flex;"><div class="monaco-icon-label-description-container"><a class="label-name"><span class="monaco-highlighted-label" title="~/Development/vscode/.vscode/launch.json"><span>launch.json</span></span></a></div></div></div></div></div></div><div role="presentation" aria-hidden="true" class="invisible scrollbar horizontal" style="position: absolute; width: 0px; height: 0px; left: 0px; bottom: 0px;"><div class="slider" style="position: absolute; top: 0px; left: 0px; height: 10px; will-change: transform; width: 0px;"></div></div><div role="presentation" aria-hidden="true" class="invisible scrollbar vertical fade" style="position: absolute; width: 10px; height: 124px; right: 0px; top: 0px;"><div class="slider" style="position: absolute; top: 0px; left: 0px; width: 10px; will-change: transform; height: 20px;"></div></div><div class="shadow"></div><div class="shadow"></div><div class="shadow top-left-corner"></div></div><style type="text/css" media="screen"></style><div class="monaco-list-type-filter-message"></div></div>

[isidorn]

Upon further inspection it seems like the tree is actually thinking it has less space than it actually has.
Note that I have verified that I pass the correct layout to the tree, so I pass around 1000px and the tree takes only around 210 px.

[joaomoreno]

This repros for me just by zooming in once in Linux. What.

[joaomoreno]

OK now it's gone. What.

[joaomoreno]

This was reproducing 100% of the time, even across reloads, with a single zoom in... until the moment I hid and showed the side bar. Now it simply does not repro at all even across reloads. 😕

[joaomoreno]

Nasty nasty bug!

[isidorn]

Works great now, verified with the suggest widget.