Is this a Plasma bug? Firefox tiling issue

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I don’t really know how to describe it other than the lower right corner extends past where it should when drag tiling or meta+arrow tiling. I attached a pic, but the video describes it better: Edit: I’ll try commenting the link to the video.

OS: Arch Linux x86_64
Host: OMEN by HP Laptop 16z-c000
Kernel: Linux 6.14.2-zen1-1-zen
Display (DP-1): 3440x1440 @ 160 Hz in 34" [External]
DE: KDE Plasma 6.3.4
WM: KWin (Wayland)
WM Theme: Breeze
Theme: Breeze (Dark) [Qt], Breeze-Dark [GTK2], Breeze [GTK3/4]
Icons: breeze-dark [Qt], breeze-dark [GTK2/3/4]
CPU: AMD Ryzen 9 5900HX (16) @ 4.68 GHz
GPU 1: NVIDIA GeForce RTX 3070 Mobile / Max-Q [Discrete]
GPU 2: AMD Radeon Vega Series / Radeon Vega Mobile Series [Integrated]
Memory: 3.76 GiB / 30.69 GiB (12%)

vlcsnap-2025-04-14-16h07m03s671
vlcsnap-2025-04-14-16h07m03s6713440×1440 161 KB

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The ID is HEe-wI5YxSQ. Put youtu.be/ in front of it and you’ll get to it. Side tiling, I have discovered to also be broken between now and when I recorded the vid.

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Hi - hmm, just to check, does that issue occur if you switch Firefox to use a desktop-native title bar? That can be switched by right-clicking on the toolbar, choosing “Customize Toolbar”, then checking the box for “Title Bar” in the bottom-left corner.

I thought that might be worth checking because there have been some previous bugs related to Firefox and tiling that were specifically connected to client-side decorations, like 466451 – Firefox with client-side decorations (CSD) loses tiling when header is clicked

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Thank you! Seems so far to fix it. I’ll let you know if it does anything funny.

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