[Bug 52432] Synapse audio "Legend" does not draw most of the buttons in the gui

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=52432

--- Comment #6 from john  ---
I tried two more trial versions of Synapse's plugins. Perhaps this is useful
for other  Synapse plugin users who want to move to linux.
At least 3 of the Synapse plugins show the same problem with wine 7.0 and 7.1.
I tried the Legend, Monark and  Dune 3.
All work perfectly, apart from the fact that the GUIs have missing sliders/knob
faces. 
This makes them more or less unusable. The knobs work but you cannot see their
settings.
I guess the plugins were all developed using the same toolkit.