I'll conduct a full test of all of them in a couple of hours and report back.
The test was done immediately following a Windows 10 reboot and with MB 3.6.9018 P.
I tested all 22 (currently) available skins and there's some weird stuff going on.
Overall, with all skins, there is more "movement" of the needles/bars with linear on. I don't know how else to describe it.
Two of the original skins (packaged with the plugin) have issues. M4762 and Hartmann & Braun. With linear enabled, all is well. With linear disabled, there is no needle movement.
Four of hiccup's skins displayed issues:
In the DejaVU Compact series, Elemental, MusicBee3, and Phred on the Lookout are fine with linear enabled. When disabled, there is no movement of the right needle.
In DejaVU Compact, with linear disabled the left needle does not move. Linear enabled is fine.
Let me know if more information is needed in order to fix this. Or, I can just leave liner enabled. As long as it isn't removed.
Example...
