Vertical tabs' titles glyphs show after being drag and dropped in floating mode

[stephendonner]

Description

Vertical tabs' titles glyphs show after being drag and dropped in floating mode

Found while testing #29692

Steps to Reproduce

1. install 1.52.37
2. launch Brave
3. set Use vertical tabs to Enabled via brave://flags
4. load a few sites
5. context-click any tab
6. choose Use Vertical Tabs
7. with Float on mouseover checked, ensure the tab strip is collapsed
8. drag any site (via its favicon) out into its own window
9. drag and drop it back into the tab strip
10. notice the tab strip

Actual result:

Tab strip now has textual artifacts/glyphs from the tab's title

example, in context	extra text showing

Expected result:

No such artifacts

Reproduces how often:

100%

Brave version (brave://version info)

Brave	1.52.37 Chromium: 112.0.5615.49 (Official Build) nightly (64-bit)
Revision	bd2a7bcb881c11e8cfe3078709382934e3916914-refs/branch-heads/5615@{#936}
OS	Windows 10 Version 22H2 (Build 19045.2846)

Miscellaneous Information:

/cc @sangwoo108 @rebron @brave/qa-team

[srirambv]

This happens on collapsed view as well and on the teared out window as well. Reported in a duplicate issue here

[kjozwiak]

The above requires 1.51.97 or higher for 1.51.x verification 👍

[stephendonner]

Verification PASSED using

Brave	1.51.97 Chromium: 112.0.5615.138 (Official Build) beta (64-bit)
Revision	2258f2fcaeb07bc95c992b7ca47f0b43ead9865c-refs/branch-heads/5615@{#1282}
OS	Windows 10 Version 22H2 (Build 19045.2846)

Steps:

Followed my original steps to reproduce; note that I did have issues re-attaching a window back to the tab strip; I'll investigate, but it's separate from this issue and verification

Confirmed dragging out and dropping back in correctly placed the tab in its drop-target position, without leaving glyphs of the tab titles from the various float/expanded/minimized modes