Transition colour issue... cant get to to correct.

Odd issue.
Running Studio, latest version.
Simple edit, but the colour treatment seems to disable over the transition.
Two GoPro clips, colour management off, input LUT on. A couple of nodes on the clip, group and timeline.
If I remove the transition, the colour issue doesn't go away. If I ripple move the edit point, the colour issue stays in the same place, now just in the middle of a clip.
Tried clearing caches, resetting etc.
Would prefer not to rebuild the edit and would like to understand what/if I am doing wrong.
https://vimeo.com/544739591/05201c0c4c
Running Studio, latest version.
Simple edit, but the colour treatment seems to disable over the transition.
Two GoPro clips, colour management off, input LUT on. A couple of nodes on the clip, group and timeline.
If I remove the transition, the colour issue doesn't go away. If I ripple move the edit point, the colour issue stays in the same place, now just in the middle of a clip.
Tried clearing caches, resetting etc.
Would prefer not to rebuild the edit and would like to understand what/if I am doing wrong.
https://vimeo.com/544739591/05201c0c4c