Crash when dragging tab out from window

In Brave beta 1.77.70 on macOS I’m experiencing a reproducible crash any time I drag a tab away from the window where it’s open. If I right click a tab and select “Move Tab to New Window”, the tab moves to it’s own new window as expected.
I’m using vertical tabs when I experience the crash, and the crash does not seem to occur when using horizontal tabs.

Here are my tab settings:

This crash does not seem to occur in Windows using the same version of Brave beta.

Steps to reproduce:

  1. launch Brave beta 1.77.70 on macOS
  2. enable vertical tabs in brave://settings/appearance
  3. open some tabs
  4. click and drag any tab away from the tab bar
  5. browser crashes

With these steps, I can reproduce the crash every time.

Expected result:

In step 4 above, I expect to be able to move a tab to it’s own window by clicking and dragging it away from the tab bar. This should give the same result as right clicking a tab and selecting “Move Tab to New Window”.

OS and Brave versions

OS: macOS Sequoia 15.3.1

Brave: 1.77.70 Chromium: 134.0.6998.39 (Official Build) beta (arm64)

Thanks for reporting @sgtpoliteness. Can you share the Crash ID’s from Brave://crashes?

No problem, here you go:

Crash from Friday, February 28, 2025 at 7:59:36 AM

Status: Upload requested by user
Local Crash Context: 30dc1104-c582-44b3-a8fc-bbbe4e1f5a05

Crash from Friday, February 28, 2025 at 7:31:30 AM

Status: Upload requested by user
Local Crash Context: 06d78607-7ce2-4d06-a0f7-63363f24de6b

Crash from Thursday, February 27, 2025 at 4:51:17 PM

Status: Upload requested by user
Local Crash Context: 69682608-c083-4d85-9b7b-ab4dd3e0f741

Crash from Thursday, February 27, 2025 at 4:42:52 PM

Status: Upload requested by user
Local Crash Context: 8c1d711a-63ca-4e3e-925f-ca123fdf19ad

Crash from Thursday, February 27, 2025 at 3:18:59 PM

Status: Upload requested by user
Local Crash Context: e9d1204c-9523-49d0-8243-6503346d1607