Anybody have issues with track mode workout with autolap and recovery time is messed up? Also HR seems funky

Yes - going straight into next interval with no recovery step.. distance measurement also incorrect.

How do you contact Garmin support? I'm not familiar with the process. And what would come out of it? Thanks

I went here: https://support.garmin.com/de-DE/?productID=777730&tab=topics&topicTag=region_training

and started a support-chat with a Garmin employee (Link at the bottom of the site). 

I think that problems like these get fixed faster, the more people reach out to Garmin directly. At least that is what I’m hoping for

There you go:

forums.garmin.com/.../workout-issue-skipping-rest-intervals-and-giving-crazy-speeds