Wanted to fill a bug, but it doesn't let me attach my file. (sorry, I can't even fill a bug...)
Here's my bug issue #0003100, and here I repeat my problem:
In attached file you can see three tools are used. Don't know why, but Face mill tool automatically sets it's Clearance to 10.0. Other tools sets to 35.0. Face mill is doing it wrong. Attached generated code to.
As you can see, Face mill first goes to Z10.0 (which will cause collision), then does it's job, and then again goes to Z10.0. Other tools instead goes to Z35.0, which is Ok.