tree support keeps getting hit

[tarrasski 0]

if i print a model with tree support enabled my Ender 3 keeps hitting the support if it goes from the model to the next layer. (detailed description at the end of this post)

i'm a forgetting a setting or is something else happening?

 

stats and settings:

running version 3.6.0 with no plugins.

i have "avoid printed parts when traveling" and "avoid support when traveling" enabled

and a "travel avoid distance" of 1.5 mm

 

combing mode = all (don't know if that matters)

 

if a is the outer wall of the support 

b is the inner wall of the support

and M is the model

_a_b_M_

 

the layers start printing at a goes trough b stops at a.

goes from a around the supports to M.

prints M goes to a again but in a direct line (M to a shortest path) hitting the supports