Datapicker Processed Image Problem

When setting all sliders of the datapicker processing image to full range, the image is not visible as it looks in original (black/white) but the red curve is missing.

Release build 2.8.1-1688-g1f07ebc1 Mar 15 2022, 04:38:23 System: Windows 10 Version 2009 Locale: German,Germany (Decimal point ',', Group separator '.') Number settings: Decimal point '.', Group separator ',', Exponential 'e', Zero digit '0', Percent '%', Positive/Negative sign '+'/'-' (Updated on restart) Architecture: x86_64-little_endian-llp64 Kernel: winnt 10.0.19043 C++ Compiler: MSVC 19.29.30038.1 C++ Compiler Flags: /DWIN32 /D_WINDOWS /W3 /GR /EHsc /wd4250 /wd4251 /wd4396 /wd4661 /Zc:__cplusplus -O2 -W3 -DPSAPI_VERSION=1