I tried many different things to resolve the above over many nights, i even reverted to a brand new 3.4.3 install..all with the exact same behavour.
At the end i found it seems to be some sort of alignment issue, i noticed if i took many alignment points it works (but then i have alignment issues after meridian flip).
so what i did after homing the mount i moved it by hand just a bit and now the issue is gone...