VS hangs when tabs wrap to new row

[JunganSe]

When the tab row is full and needs to wrap to a new row, VS hangs.

• CPU usage spikes and VS becomes unresponsive.
• The last tab (the one that would be wrapped) is the only one still visible.
• The last tab cycles between the first row and the second, about once every second.
• If the tabs wrapped because the window or tab well was resized, one can drag it back to be larger and the issue goes away once all tabs fit on one row.
• If left for a while, VS sometimes eventually crashes and closes. Sometimes it must be killed manually.
• If VS is killed, the issue remains when it is reopened. This can be remedied by deleting the .vs folder so that all open tabs are cleared.
• If there are multiple tab wells, this appears to only happen on the first one. When the second tab well is filled and about to wrap, VS freezes for a moment and then resumes as expected.
• If this extension is disabled, the issue goes away. It reliably comes back when the extension is enabled.

Visual studio version: Insiders [11612.153]

[iddqDaniel]

Same here.
Visual Studio 2026 Enterprise 18.4.2