Remove brush tool not rendering detail in FIT view

So I'm experiencing a strange issue in Lightroom Classic 13.5.1 . Basicilly if I import a raw file and make REMOVE brush edits in FIT view those edits are blurry and lacking in detail if I zoom into 100% or greater. If I make the very same edits while zoomed in at 100% or adjust an existing using the arrow key, the problem resolves itself, and the removed/healed are looks much more natural and detailed.

Here's the workflow that might replicate it:
1. Make sure your LR isn't set to auto build full size previews

2. Import a raw file you've never edited (.cr3 if possible and ideally something noisy since you can see it easier) 

3. Go to DEVELOP

4. Make sure you are in "Fit" zoom mode NOT 100% etc

5. Apply some REMOVE brush to blemishes or other parts of the images

6. Now zoom in to 100% or 200% and see if the adjustments lack detail.

7. Note that if you move or redo the healing brush it fixes itself

Here's what I know:

-Exported images contain these flaws if not corrected

-Only seems to affect images where healing brush was applied in zoomed out / fit mode.

-Latest LR update didn't resolve it

What I'm curious to know

-If others have the same issue

-If certain file formats aren't affected

Cheers and hope we can solve this!