ronso0

> A light bulb is perfect! I'll see if I can come up with some clean SVG icon This the best I could do, given the small size...  352aa4780e

When testing the "Selected track" suggestion I got an empty track table twice. Trying again with the same tracks later on gave me the expected "Can't find tracks ..." view.

> `b54eed3`, I want to use it. But I don't know what is the best approach to use this commit. How can I include that commit into this PR? `git...

This is not a crash but a hit debug assert: https://github.com/mixxxdj/mixxx/blob/c9d95818b69c28fcd66adea58c35bcc4a15fdfc9/src/mixxxapplication.cpp#L111-L126 As noticed in #10839 the reason is very likely the same: no button release is emitted when using `Ctrl`...

Huuh? #10839 only touches the knob/slider event handlers. Is `DEBUG_ASSERTIONS_FATAL` turned off for some strange reason?

You didn't Ctrl+click anything else in Mixxx after launch, only 3 x on the hotcue button?

...that, or there are some more debug assertions in 2.4 (didn't look at the backtrace, yet)

Wait, this is about the hotcue button, not about hotcue markers on waveforms, right?

Is fixed after https://github.com/mixxxdj/mixxx/pull/10869 was merged to 2.3.4?

This quick patch adds `_activate` to the learning filter ~~[MIDI-learning-allow-learning-HotCue-button-with-poin.patch.txt](https://github.com/mixxxdj/mixxx/files/9452225/MIDI-learning-allow-learning-HotCue-button-with-poin.patch.txt)~~ broken Pick it up if you like, I don't have any motivation to get this to work for `_clear`. Maybe...