SUMMARY When the wallpaper type is set to "Slideshow", there is a possibility that a visual glitch of the "Order" dropdown list can be observed when opening the Wallpaper module of System Settings. The glitch is not observed through right-clicking on the desktop and selecting "Desktop and Wallpaper". STEPS TO REPRODUCE 1. Launch System Settings, click on the Wallpaper module 2. Set the wallpaper type to "Slideshow" and order to "Random" (not sure whether setting the order is necessary) 3. Close System Settings, reopen it and go to the Wallpaper module again (avoid moving your mouse after clicking on the Wallpaper module) OBSERVED RESULT There is a possibility that a visual glitch can be observed immediately (not every time, see the attached screenshots). Changing the wallpaper type consecutively (e.g. Image → Slideshow → Image → Slideshow → ...) may also trigger the glitch. Sometimes changing the wallpaper type consecutively will also fail, and a relaunch of System Settings is necessary. The glitch is observable when the system language is set to American English (en_US) or Simplified Chinese (zh_CN) (I haven't tried other languages yet). EXPECTED RESULT There should not be any glitches SOFTWARE/OS VERSIONS Linux: 6.9.5-arch1-1 KDE Plasma Version: 6.1.0 KDE Frameworks Version: 6.3.0 Qt Version: 6.7.1 ADDITIONAL INFORMATION Graphics Platform: Wayland Screen Resolution: 1920x1280 (scale 100%, refresh rate 144Hz) Global Theme: Breeze Color Theme: Breeze Classic (with "accent color from wallpaper" and "tint all colors with accent color") Application Theme: Breeze Plasma Theme: Materia Color Window Decorations: Breeze Icons: Papirus UI Font: Noto Sans 12pt (anti-aliasing enabled, sub-pixel rendering RGB, hinting disabled), with Noto Sans CJK SC configured for Chinese through fontconfig
Created attachment 170846 [details] Visual glitch when the system language is set to American English (en_US)
Created attachment 170847 [details] Visual glitch when the system language is set to Simplified Chinese (zh_CN)
Can you reproduce this issue when you right-click on the desktop and choose "Desktop and Wallpaper"?
(In reply to Nate Graham from comment #3) > Can you reproduce this issue when you right-click on the desktop and choose > "Desktop and Wallpaper"? No, I cannot reproduce this through the right-click menu. This is only reproducible through system settings. Furthermore, I observed that only the "Image → Slideshow → Image → Slideshow → ..." order will trigger the glitch; I cannot reproduce this with other wallpaper plugins.
I can reproduce this with 6.1.3. I also noticed that moving the mouse cursor over the Positioning drop down removes the text glitch I can also reproduce on git-master. Additionally, just going from Image -> Slide show -> Image shows the glitch. Moving the cursor over the text fixes it like 6.1.3.
I'm not able to reproduce this at all in git master, FWIW. Can you, Tracey? If not, I think we can call it fixed.
I can still reproduce the font corruption / glitch on git-master Going from Image → Slideshow -> Image will sometimes show the font corruption (glitch). Positioning: Centered - the word "centered" will appear corrupted Sometimes I have to switch back and forth a few times to see it, but I can reliably reproduce the problem As an aside, after closing and re-opening System Settings a few times, it crashed. I'll handle that in a separate bug report.
Created attachment 172375 [details] Font corruption in Positioning text Centered This screenshot shows the font corruption
(In reply to TraceyC from comment #8) > Created attachment 172375 [details] > Font corruption in Positioning text Centered > > This screenshot shows the font corruption I think I saw this in the past, I don't see it anymore with current master. What are your display settings, scale in particular ?
I just rebuild workspace from master and re-tested. I'm no longer able to reproduce the bug. I also can no longer reproduce in Plasma 6.1.5 > What are your display settings, scale in particular ? Just the laptop display currently (git-master) 1920x1080 @100% There was discussion about this recently, and it was noticed that you may need to be using the Noto Sans font to see the effect Huanyu Liu, when you update your system to Plasma 6.1.5, this will probably be fixed for you
(In reply to TraceyC from comment #10) > There was discussion about this recently, and it was noticed that you may > need to be using the Noto Sans font to see the effect > > Huanyu Liu, when you update your system to Plasma 6.1.5, this will probably > be fixed for you I have updated my system to Plasma 6.1.5, but the bug persists. I played with the font settings, and found that the bug is reproducible only when using certain fonts at certain sizes. What's worse, the bug seems to be reproducible only at certain window sizes. The following fonts at 12pt can reproduce it reliably on my laptop (at the minimal window size of System Settings): - Noto Sans/Serif - Noto Sans/Serif CJK - FreeSans/FreeSerif (but not FreeMono) - Sarasa Gothic/UI/Fixed/... When using certain fonts, the glitch will happen to "Positioning" (instead of "Order"). You may need to switch the "Wallpaper type" several times before the glitch shows up. See the following screenshot (FreeSerif at 12pt). In addition, Liberation Sans at 14pt and Noto Sans at 11pt & 14pt (but not 13pt) can also reproduce it. If you change the window size, the glitch may or may not go away. At a specified combination of font, font size & window size, whether the glitch happens or not is determined. All the experiments above were done at the minimal window size of System Settings. Software information: Operating System: Arch Linux KDE Plasma Version: 6.1.5 KDE Frameworks Version: 6.6.0 Qt Version: 6.7.2 Kernel Version: 6.10.10-arch1-1 (64-bit) Graphics Platform: Wayland Colors & Themes information (if relevant): Colors: Breeze Classic with "Tint all colors with accent color" and "Accent Color From Wallpaper" Application Style: Breeze Plasma Style: Materia Color Window Decorations: Breeze Icons: Papirus Cursors: Material Cursors Resolution is 1920x1080 @ 100% with refresh rate 144Hz. All themes and fonts are from Arch Linux and archlinuxcn repositories. (I'm not really familiar with the bugzilla status system; is it correct to change the status to REPORTED?)
Created attachment 173849 [details] Glitch happened to "Positioning" (instead of "Order") with FreeSerif at 12pt
I was able to reproduce with Noto Serif 12pt using my laptop screen - 1920x1080@100% git-master Wayland Switched wallpaper type from Image to Slideshow (or back), noticed "Scaled and cropped" was corrupted as in the latest screenshot
Sounds like https://bugs.kde.org/show_bug.cgi?id=479891 *** This bug has been marked as a duplicate of bug 479891 ***
Please let us know if this isn't fixed with Plasma 6.3.