[6.12c] Display bug on external display

[wizardeur]

Hi,

First post and it's a bug report. I've encountered an issue while using an external display connected to a Macbook, as shown on the GIF below. When I move the cursor over any button it this happens:


How to reproduce (in my environment):
1. Start Reaper on external display (empty session or any project)
2. Move the cursor over a button on the external display
3. Observe the issue

It happens right after starting Reaper with empty project as well as with multiple tracks. If I start the window on the internal display or move the window from the external to internal and back the issue is no longer present.

[Justin]

Is the internal display a retina macbook pro? What resolution is the external display?

Do you have any scripts or extensions running? Can you try without?

[wizardeur]

Originally Posted by Justin

Is the internal display a retina macbook pro?

Yes it is.

Originally Posted by Justin

What resolution is the external display?

1920x1080

Originally Posted by Justin

Do you have any scripts or extensions running? Can you try without?

I have both, the issue still exists with them disabled.

[Justin]

Hmm what macOS version?

I think it’s very very likely that an extension is an issue. Can you try quitting REAPER, and renaming your ~/Library/Application Support/REAPER/UserPlugins/ directory and run REAPER again?

[wizardeur]

MacOS 10.15.5, I've renamed the ~/Library/Application Support/REAPER/UserPlugins/ and /Library/Application Support/REAPER/UserPlugins/ and the issue still persists.

[Justin]

OK thanks!

Can you post your reaper.ini and reaper-themeconfig.ini and a minimal .rpp file that duplicates this too?

Is this the unmodified Default theme?

[wizardeur]

Yes, that happens with the default theme as well as with other themes.
Please find a zip with the requested files here: https://nc.mniam.net/index.php/s/WZwzBz9NbpNNPRD

[Justin]

Thanks, can you also tell me the way the displays are arranged (which display is the primary? Which one is on the left/right/top/bottom/etc?)

[Justin]

I'm testing on a RMBP running 10.15.5 and using a Thunderbolt Display as the primary monitor, with the built-in display to the right of it, and I've tried various other arrangements and can't duplicate this.

Can you make a zip of your full ~/Library/Application Support/REAPER directory and email that to support at Cockos dot com (do not post a link to it here!)?

Also if you quit REAPER and rename that path (causing REAPER to behave as a fresh install on the next run), does it still do it then?

[wizardeur]

I've sent the directory zip over email.

The check with empty REAPER dir results in Reaper working as expected - no issue. Restoring the directory - issue is back.

[Justin]

Thanks, I got the zip. I'm testing with it and can't duplicate. Hmph!

Can you try renaming your reaper.ini to reaper-good.ini, running, see if it does it then, etc? To start narrowing things down... :/

[wizardeur]

I did a little debugging. If I remove the [REAPER] section from the reaper.ini the issue is no longer there. So I've played around with removing single lines from that section. If I remove:

layout_master_tcp=ca - Small

then the problem disappears. Reaper adds this line again and after restart the issue is back.

[Justin]

Originally Posted by wizardeur

I did a little debugging. If I remove the [REAPER] section from the reaper.ini the issue is no longer there. So I've played around with removing single lines from that section. If I remove:

layout_master_tcp=ca - Small

then the problem disappears. Reaper adds this line again and after restart the issue is back.

Hmm that's odd that that line is getting added back! Let me see if I can figure out why.

[Justin]

Sorry if I missed this answer -- is the primary display the RMBP or the external? Also what model RMBP is this? Thanks!

One other thing to try which will help diagnose:

If you go to preferences/general/advanced, and disable Metal support (disable all optimized drawing), quit REAPER, run it again, does that resolve it?

[wizardeur]

The RMBP is the primary display.
MacBook Pro (15-inch, 2019) i9 16GB RAM.

[wizardeur]

Originally Posted by Justin

If you go to preferences/general/advanced, and disable Metal support (disable all optimized drawing), quit REAPER, run it again, does that resolve it?

Yes, it does resolve the problem.

[Justin]

Originally Posted by wizardeur

Yes, it does resolve the problem.

Thanks. OK if you turn Metal back on, and then turn off "Automatic Graphics Switching" (in system preferences/energy saver, which I assume was on?), does that fix?

[Justin]

Aha I finally duplicated! Ok let me get to the bottom of this.

[wizardeur]

Great!

Just to confirm, when automatic graphics switching is off the problem persists.

[Justin]

This will be fixed in the next pre-release build (and next release), thanks!

[wizardeur]

Awesome! Thank you!

[Justin]

The latest pre-release build (see the pre-release forum if interested) should fix this!