Paint on supports incorrectly using "XY separation" in place of "Top contact Z distance"

[RPuffinstuff]

Description of the bug

Paint on supports are using "XY Separation between an object and it's support" in place of "Top contact Z distance". I normally separate XY by 1.5mm, with a 0.25 top contact, and this resulted in a print surrounded by, but not touching, supports. I used "Automatic painting" on each item to create the support set.

Project file & How to reproduce

BambuLab+A1+Mini+Ready+to+Print Supported.zip

Checklist of files included above

• Project file
• Screenshot

Version of PrusaSlicer

2.8.0 64-bit

Operating system

Windows 10 Home

Printer model

Mk4 (upgraded from Mk3+)