ActiveTab heading unvisible at MAC 3.8.0beta

[Sommi486]

Describe the bug
At the actual 3.8.0beta1 in settings there ist no heading for the active tab.
If you change tab it appers again and new chosen tab has no heading.

Screenshots

Operating system
Big Sur 11.3

Version of Jamulus
3.8.0beta1

[softins]

I suspect it is white text on a white background. Do you use dark theme or light theme? Or another (I only have Mojave, not Big Sur). Can you change themes and try again?

[Sommi486]

I use dark theme.

Changing to light theme doesn't solve the bug.

[softins]

This is what it looks like on my Mac running Mojave:

What does a tabbed dialog from another app look like on your system?

[softins]

Looks like this bug is not specific to Jamulus
https://forum.qt.io/topic/120907/macos-big-sur-and-qtabwidget-bug

[Sommi486]

Here is how it looks on Catalina:

This is how other Apps look on BigSur:

And this is how BigSur Settings look in dark & light mode:

[softins]

Hmm, so Big Sur has broken stuff, leaving framework and app developers to pick up the pieces. Typical!

Not sure of the current status of Qt, but looks like it will affect all apps built with Qt, and only fixed, sometime, with Qt 5.15.x and Qt 6. :(

We currently build with Qt 5.9 for maximum backward compatibility with older macOS versions.

[softins]

@Sommi486 please could you try the version at https://github.com/jamulussoftware/jamulus/suites/2658566875/artifacts/58504147 on your Big Sur machine? It is a fresh build using Qt 5.15.2. I expect that it shows the same problem, but would like to be certain.

Despite the strange URL above, it is a dmg contained within a zip file.

[Sommi486]

Looks much better. some Glitches with the blue small Line and a asymmetric Effekt Slider.

[softins]

@Sommi486 please could you try the Mac build from https://github.com/jamulussoftware/jamulus/actions/runs/823027995 ?
It uses Qt 5.9.9 as before, but is built with a more compatible SDK (10.15). It may or may not give different results from those above, but I don't have a Big Sur machine to try it on.

[softins]

I have also created test builds on the compatible SDK (10.15) with

• Qt 5.12.10 at https://github.com/softins/jamulus/actions/runs/823067833, and
• Qt 5.15.2 at https://github.com/softins/jamulus/actions/runs/823304664

If you have the time to try out the artifacts from those runs on Big Sur and compare results, that would be great.

[softins]

I would be interested to know how 3.8.0beta2 behaves on Big Sur.