The colour management bug that caused the crash has been fixed in master and has been backported to Leia, but is not released yet.
I've also fixed another bug that caused the automatic color primaries detection to be broken.
This now works fine with both software decoding and VAAPI with the Linux GL renderer and is great to play back BT.2020 videos on sRGB displays.
See:
So it would be safe to add it back to LibreELEC, provided those two line fixes are added.
Btw. I've done some testing and the overhead is so low that you can easily decode 4K HEVC 10-Bit HDR10 BT.2020 on a low power Pentium J5005 (Gemini Lake) using VAAPI. This is much faster than the tone mapping and colour management in mpv, which really struggles on this CPU.