Loosing Running Dynamics

On my Fenix 5 Plus Sapphire I'm loosing running dynamics data after two minutes that has been gathered by a HRM RUN.

I'm starting the workout, the HRM Run connects and stays connected. It collects all the data for 2 minutes, but then it's dropping running dynamics and only collecting HRM and Cadence data.

I've found a thread about this problem, where many users report this issue (but its not yes fixed):

https://forums.garmin.com/forum/on-the-trail/wrist-worn/fenix-5x-plus/1366525-first-gen-hrm-run-drops-out-after-2-ish-mins/page5

Yesterday I've tried the temporary solution that has beeen suggested in that thread and it's working. If i'm leaving my phone out of range, or disable phone connection on the F5P, the running dynamics are recorded fine.

Dear Garmin... when will you fix this? I think we did not pay for a highend watch to be beta testers. Pretty disapointing from a 800 EUR watch and a 100 EUR HRM monitor. :( ciq.forums.garmin.com/.../1382878.jpg ciq.forums.garmin.com/.../1382879.jpg