Okay, i was written before that Milkdrop crashes very often.
Actually i didn't know if it crashes but the visualizer shows a black screen often after the tab was opened.
However - my request is solved so far. Thanks.
I just would like to leave a question at the end, but actually it's a request too
....
When switching from library to visualizer tab with collapsed left and right panels - why the panels become collapes AFTER the vis-overlay is displayed ? Same when switch back from visualizer tab to library - first the left and right panels become displayed before the vis-overlay is closed.
Both actions lead in unnecessary GUI flicker and high CPU usage because of quick resizes of the vis-overlay during visualizer is active.
If possible the vis-overlay should be displayed like the last-in-first-out (LIFO) strategy to avoid the problems explained above.
So first hide side panels then show overlay respectively first close overlay then bring back side panels.
Now it's a FILO
Greetings