[BUG] manually added "block Supports Areas" ignored after adding a Modifier to the model

[funtomaas]

Description of the bug

Manually Added areas for "no support" are ignored if I add a modifier (-Cube with 100% Infill) afterwards on the top of the 3d-model.
Support-Type: Organic.

Project file & How to reproduce

• selected areas example:
  

• without modifier on top:

• modifier:

• after slicing: supports in "no support-areas":

Checklist of files included above

• Project file
• Screenshot

Version of PrusaSlicer

Version 2.9.0

Operating system

Windows 11 Home; Version 10.0.26100 Build 26100

Printer model

Mini+

[u89djt]

You need to zip the project file to post it.