Tahoe 26 added a border to my borderless window?

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I just upgraded to Tahoe 26, but it appears that now my game has a semi-transparent 1 pixel border around its edge at all times, which is very distracting.

If this is something that can be adjusted on Blizzard’s side (during window creation, say), it’d be much appreciated.

It looks like Moonlight is affected by it too, bummer:

https://github.com/moonlight-stream/moonlight-qt/issues/1661

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yeah that’s another known issue with wow. just lower priority than one i got in other thread, but they’re aware of it too.

it only affects wow though. other games i tested full screen fine. wow is just doing it in a way that apple isn’t on board with.

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OK … will hold off upgrading to 26 for the time being.