Created attachment 202836 [details] Monospace.Alphabet.-.a-z.lines.odt In LibreOffice: - Tools > Options - LibreOffice Writer > View - Make sure the "Smooth Scroll" checkbox is ON. STEPS TO REPRODUCE Then you can: 0. Open attached document. 1. Press "Page Down" 2 times. 2. Press "Page Up" 2 times. BUG: Certain lines randomly get: - weird rendering artifacts - OR "vertical dots" - OR "vertical lines" - OR weird "blank lines". (See attached screenshots.) - - - NOTE #1: You can also: - Press the up/down ARROW KEYS - Use the mouse scroll wheel to go back/forth between pages, getting similar symptoms. But it DOES NOT occur if you: - Use the mouse and drag the scrollbar up/down manually. - - - NOTE #2: The visual artifacts seem to only start "at the edge" of the page, but once they "stick" to that line, they stay stuck to that line until they go off the screen again. (So a "Page Down" might only cause 1 artifact to be on the screen. But multiple "ARROW DOWN" might cause a new artifact every handful of lines.) - - - NOTE #3: I also tested it with various skia "Graphics Output" options under: - Tools > Options - LibreOffice > View This bug still occurs with all combos of ON/OFF: ABOUT 1 (my default): - ON = "Use Skia for all rendering" - OFF = "Force Skia Software rendering" Version: 25.8.1.1 (X86_64) Build ID: 54047653041915e595ad4e45cccea684809c77b5 CPU threads: 8; OS: Windows 11 X86_64 (build 22631); UI render: Skia/Vulkan; VCL: win Locale: en-US (en_US); UI: en-US Calc: threaded ABOUT 2: - OFF = "Use Skia for all rendering" - OFF = "Force Skia Software rendering" Version: 25.8.1.1 (X86_64) Build ID: 54047653041915e595ad4e45cccea684809c77b5 CPU threads: 8; OS: Windows 11 X86_64 (build 22631); UI render: default; VCL: win Locale: en-US (en_US); UI: en-US Calc: threaded ABOUT 3: (INCREDIBLY SLOW scrolling.) - ON = "Use Skia for all rendering" - ON = "Force Skia Software rendering" Version: 25.8.1.1 (X86_64) Build ID: 54047653041915e595ad4e45cccea684809c77b5 CPU threads: 8; OS: Windows 11 X86_64 (build 22631); UI render: Skia/Raster; VCL: win Locale: en-US (en_US); UI: en-US Calc: threaded Here is the skia.log for ABOUT 1: RenderMethod: vulkan Vendor: 0x10de Device: 0x2504 API: 1.4.312 Driver: 580.352.0 DeviceType: discrete DeviceName: NVIDIA GeForce RTX 3060 Denylisted: no
Created attachment 202837 [details] Case 0 - Original Look
Created attachment 202838 [details] Case 1 - 1 Page Down, 1 Page Up
Created attachment 202839 [details] Case 2 - Scroll Wheel Down, Scroll Wheel Up
Created attachment 202840 [details] Case 3 - Multiple Arrow Down
Please test in safe mode, Menu/Help/Restart in Safe Mode If it doesn't work, please try updating the graphics driver directly from NVIDIA.
Same issue with: - Safe Mode ON / OFF - Latest NVIDIA driver: 581.29. - Previous NVIDIA driver was: 580.88. Same in master from a few days ago (2025-09-12): Version: 26.2.0.0.alpha0+ (X86_64) / LibreOffice Community Build ID: b33cc5a7388c1739ff4a02a84751800f3e3086ce CPU threads: 8; OS: Windows 11 X86_64 (build 22631); UI render: Skia/Vulkan; VCL: win Locale: en-US (en_US); UI: en-US Calc: CL threaded