Text area flashing black
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I started noticing today that after opening notepad++ the text area will start flashing between black and white. It seems to stop when I start typing but will resume if I open a new document, or switch to another window and back to notepad++. I tried updating to 8.9.1 but didn’t make any difference.
Here’s a video of it in action:
https://1drv.ms/v/c/e4eed2b6e6f7779c/IQBxm1-IjRgxTI9bDiABsTEHASbZRdRzEBYzWd-OA5I1r14?e=azX5uuRunning Windows 11 25H2 26200.7628 on ARM64 (MS Surface Laptop 7).
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The ?-menu’s Debug Info includes lots of important information for helping debug such problems, including details on your display and video driver, which are the likely culprit. You might want to look at the official bug report #17392: “[BUG] Flashing re-rendering alternately with different offsets” , as my initial guess is that your problem is related.
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@PeterJones Thanks. Changing the rendering mode to GDI, DirectWrite (retain frames), or DirectWrite (Draw to GDI DC) seems to stop the issue.
Here’s the debug info:
Notepad++ v8.9.1 (ARM 64-bit)
Build time: Jan 18 2026 - 21:12:46
Scintilla/Lexilla included: 5.5.8/5.4.6
Boost Regex included: 1_90
pugixml included: 1.15
nlohmann JSON included: 3.12.0
Path: C:\Program Files\Notepad++\notepad++.exe
Command Line:
Admin mode: OFF
Local Conf mode: OFF
Cloud Config: OFF
Periodic Backup: ON
Placeholders: OFF
Scintilla Rendering Mode: SC_TECHNOLOGY_DEFAULT (0)
Multi-instance Mode: monoInst
asNotepad: OFF
File Status Auto-Detection: cdEnabledNew (for current file/tab only)
Dark Mode: OFF
Display Info:
primary monitor: 2304x1536, scaling 150%
visible monitors count: 1
installed Display Class adapters:
0000: Description - Qualcomm® Adreno™ X1-85 GPU
0000: DriverVersion - 31.0.133.2
OS Name: Windows 11 Pro (64-bit)
OS Version: 25H2
OS Build: 26200.7628
Current ANSI codepage: 1252
Plugins:
mimeTools (3.1)
NppConverter (4.7)
NppExport (0.4)
