MATE sometimes loses track of window ordering

On my desktop, I run into a strange issue every now and again where MATE loses track of what order windows are stacked in. For example, let’s say I have two windows, with one window covering the other. Then, I click on the window border on the application that’s in front to move it around, and I can’t. Instead, the window underneath it activates. When this happens, the window that was in front will remain in front, even when it’s no longer the active application with focus.

I don’t really know how to reproduce this, it just happens sometimes and I don’t know what triggers it.

This desktop has an nvidia card, i7 haswell processor, 16gb of RAM, if any of that that matters.

Hi
What window manager are you using? (Check it in MATE Tweak -> Windows)

I’m not sure. I can check when I get home. One thing I can say is that I’ve never changed it, so it would be whatever is default.

Sorry for the delay, it’s using Marco.

Hi jay

Tough trying to find a intermittent problem.

You have a high powered box, try running the other two options for a while. I like Compiz but others prefer Compton. Just may work better for you.

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I also ran into this issue but couldn’t determine the cause and ended up using a gpu compositer.

I tried the other options a while back but I didn’t like them, because my chosen desktop theme doesn’t apply to the other options. I’d really like to find a way to trigger this because I would like to file a bug and work toward getting this fixed. This is the second machine I’ve had this issue on, the other had AMD graphics but I no longer use MATE on that machine.

What version of Ubuntu MATE are you using?

16.04. Sorry, I should’ve mentioned that.

Did you browse the issues on the Marco github repo?
I think this report for instance resemble yours: https://github.com/mate-desktop/marco/issues/251

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That sounds like my issue. I’ll pursue this there. Thanks!