High CPU usage when cover art row surpass certain width to height ratio

[jus]

2.4.0-alpha-pre (build main r7779)
10.14.6 (18G8022)
HDPI display 15,4-inch (2880 x 1800)

Expected:
* Resizing the cover art column should not stall the application

What happens instead:
* Under circumstances, resizing the cover art column eats all available CPU, and makes the app unresponsive

How to reproduce:
* Check in Preferences > Library > Library row height (default 20px). This translates on a HDPI display to a height of 40px
* Resize over a certain amount, (on my machine near 1140px), and see the CPU usage spike
* If you manage to select a larger line height, the CPU goes back to normal

[jus (jus)]

related lp:1396056

[Be (be.ing)]

Does the CPU usage go back to normal after it has finished resizing?

[jus (jus)]

Yes, as seen at the end of the video.

Please note the Activity Monitor to the right side of the screen recording.

[Swiftb0y (swiftb0y)]

Mixxx now uses GitHub for bug tracking. This bug has been migrated to:
https://github.com/mixxxdj/mixxx/issues/10332