On Sun, Sep 12, 2021 at 02:29:19AM +0200, Kirill A. Korinsky via Bug reports for GNU Emacs, the Swiss army knife of text editors wrote:
> Good day!
> 
> I've described this bug here:
> https://github.com/hlissner/doom-emacs/issues/5469
> 
> During investigation I've discovered the exact commit which brokes
> toolbar on this scenario.
> 
> Let me share git bisect log:
> git bisect start
> # good: [cfcf42ff879f766ffe5812fb0cd12f35803c1bfb] Ensure that gud commands for non-GDB debuggers are handled by repeat-mode
> git bisect good cfcf42ff879f766ffe5812fb0cd12f35803c1bfb
> # bad: [192a384408cc846d8e66e91a67cd9ad4e7f0be24] Revert usage of format-prompt in python.el
> git bisect bad 192a384408cc846d8e66e91a67cd9ad4e7f0be24
> # bad: [beb54dc1b2b00cb4541b82acf6ead8a8075c3011] Improve documentation of 'file-preserve-symlinks-on-save'
> git bisect bad beb54dc1b2b00cb4541b82acf6ead8a8075c3011
> # bad: [c56e395edf5babdbcc65fa7bdb9fb462c674f156] Let image-dired-mouse-toggle-mark act on active region
> git bisect bad c56e395edf5babdbcc65fa7bdb9fb462c674f156
> # bad: [0ec67a295632f3c4ac92e0b6a0070f67dedac4eb] ; so-long-tests.el: Suppress expected warnings
> git bisect bad 0ec67a295632f3c4ac92e0b6a0070f67dedac4eb
> # bad: [12c5ca4d825496b3c7304b75ab82a6fabdc2023d] Fix some macOS problems
> git bisect bad 12c5ca4d825496b3c7304b75ab82a6fabdc2023d
> # good: [0bd1346318fe9ef4eba91905172d30a030d7da18] Fix issue with mml-preview from outside Gnus
> git bisect good 0bd1346318fe9ef4eba91905172d30a030d7da18
> # good: [55a9c17cef78b1fd3da42bcc2ab55d4acbaa24eb] Change Tramp version to "2.5.2-pre"
> git bisect good 55a9c17cef78b1fd3da42bcc2ab55d4acbaa24eb
> # good: [a4d2c88cdee90a3e4863a62c4ff69896d0c1a347] Simplify macOS drawing code
> git bisect good a4d2c88cdee90a3e4863a62c4ff69896d0c1a347
> # bad: [1ba02d85a964e1b2c6a9735cd3decdc524e06dc1] Fix macOS live resize drawing
> git bisect bad 1ba02d85a964e1b2c6a9735cd3decdc524e06dc1
> # bad: [960f3fc589d8d021e1ed1a505e660929e4c13d0a] Change NS port resize detection
> git bisect bad 960f3fc589d8d021e1ed1a505e660929e4c13d0a
> # good: [1535c81f77153dd61426246be2e8afd33fa6909a] Tidy up NS port OS window handling
> git bisect good 1535c81f77153dd61426246be2e8afd33fa6909a
> # first bad commit: [960f3fc589d8d021e1ed1a505e660929e4c13d0a] Change NS port resize detection

I can't for the life of my see why that commit should break it, but
can you please try the attached patch and see if it fixes the problem?
I can't replicate it here.
-- 
Alan Third