When having multiple tabs, opening a new one in the background does not resize the tabs bar

[freiondrej]

App version

1.118.1 (331)

macOS version

15.2 (24C101)

Steps to reproduce this bug

1. Have multiple tabs open, so that the whole tab bar is filled (=opening a new one will have to resize the previous ones).
2. On the rightmost tab (e.g. https://developer.mozilla.org/en-US/blog/), open some link in new tab (e.g. with cmd click) - e.g. the first blogpost.
3. Stay on the https://developer.mozilla.org/en-US/blog/ tab and open another link in new tab, let's say the second blogpost.

Expected behavior

In step 2, the tabs bar should resize to show the newly opened tab with the first blogpost. However, this does not happen until step 3 - and even then, only one of the opened tabs is shown (the first blogpost), the other one (the second blogpost) is still hidden and we need to scroll for it.

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I have no experience with Swift development yet, but if this is a question of adjusting a simple if (as it might be, given that the resizing is indeed triggered in step 3), I might be able to give this a go, if you could point me where the logic resides. 🙇