A35k has problems with the LNAV and VS

I already know that the A35k has problems to follow the flight plan but in my first flight it had problems to maintain the VS the A35k didn’t tried even. I was flying like a S on a straight flight plan route but my vertical speed was going down to -2000 and up to +6000. One Time I had to take controls because my VS was -11000. Do other users have the same problems as me? I only read about issues following flight plan.

Device:Google Pixel 8 Pro
Operating system: Android 16

This issue is because you are on 26.2, where the A35K is accessible but the autopilot is broken.

Update to 26.3 and this issue should resolve. The LNAV issue is being investigated.

Thank you.