Premiere Beta 25.0 Producing high contract over saturated output

Having updated a 24.5 project to Beta 25.0 the output appears very high contrast and somewhat oversaturated. This is a sequence with a clip from a Sony A7s3 4k 10 bit 4.2.0 S-Log-3 on a 4k sequence. Premiere correctly identifies the colour space and applies the correct LUT. I have tried various export presets including those for Adobe stock using both hardware and software rendering and the result is the same. I also doesn't matter if I export directly or use Media Encoder. Clip details below...

Peter

Type: MPEG Movie
File Size: 192.15 MB
Image Size: 3840 x 2160
Frame Rate: 50.00
Source Audio Format: 48000 Hz - 16-bit - Stereo
Project Audio Format: 48000 Hz - 32 bit floating point - Stereo
Total Duration: 00:00:20:32
Pixel Aspect Ratio: 1.0
Alpha: None
Color Space: Sony S-Log3/S-Gamut3.Cine
Color Space Override: Off
Input LUT: None
Video Codec Type: HEVC 10 bit 4:2:0 (Full Range)