2021.6/7 MacOS: Edit Window: Zoom Toggle breaks basic Track display elements

[djgwk]

In Edit Window, when using Zoom Toggle, toggling to a different track than the one selected when Zoom Toggle is first engaged causes the following Basic UI elements to disappear:

Track name
Record
Input Monitor (on PTU)
Solo
Mute

Display type toggle and automation controls, and track drop-down menu, are not affected.

If enabled, Volume and Pan indicators in the I/O UI panel will also disappear, i.e. blank panels are drawn with no text inside.
I/O Input and Output selections are still displayed correctly.

This occurs across multiple tracks, i.e. if you engage Zoom Toggle on track 1 and then select track 4, UI elements for tracks 2, 3 and 4 will disappear.

This behavior occurs slightly differently in reverse: if track 8 is selected, Zoom Toggle is engaged, and then track 1 is selected, tracks 2-7 UI elements disappear... but tracks 1 and 8 will display as expected.

Attachment shows this behavior across multiple tracks.

Disabling Zoom Toggle, or selecting the original track where Zoom Toggle was engaged, restores all missing UI elements, so I'm guessing this is just some type of UI window draw error.

First noticed this in 2021.6, hoped it would be fixed in 2021.7 but was not.

PTU 2021.7 on MacOS Big Sur 11.5.1, iMac 18,3 i7 4.2, HD Native TB+Omni

[Ben Jenssen]

Shocking!

[djgwk]

Fixed in 2021.10