I've retested with the "Enabled tabs Tray to Compose rewrite" toggle disabled, and the issue still reproduces.
Bug 1875259 Comment 4 Edit History
Note: The actual edited comment in the bug view page will always show the original commenter’s name and original timestamp.
I've retested with the "Enabled tabs Tray to Compose rewrite" toggle disabled, and the issue still reproduces. Tested on today's Fenix nightly 124.0a1 with a Google Pixel 6 (Android 14).