Known issues/bugs (admin please make sticky) v2.0

Not sure why there isn't a thread already devoted to this, but considering people ask the same questions over and over I thought perhaps we should put together a list of known/acknowledged bugs and issues for people to check.
I don't want this to become a complaint thread - there's plenty of those already, and I just want us to focus on issues that have been raised and someone at Garmin (the Beta team, the support team etc.) have confirmed are issues they are working on.
This is by no means an exhaustive list - but I want to focus on the issues that a newbie may come across after buying the watch (or that may give them pause for thought before even buying the watch) and to help give Garmin a real "hit-list" of the issues causing their customers pain.

If you have an issue/bug that you want me to add to the list then post below (or DM me if you'd prefer) with the following
  • Issue/Bug encountered
  • Description of what it is/what it affects
  • How to recreate the bug/issue
  • Response from Garmin (if any)
  • Ways to mitigate/fix/avoid the issue (if possible)
  • Time-frame indicated from Garmin for it to be fixed (if any)


I want to pull this into two separate sections - software/firmware issues and sensors/communication issues. I'm happy to consider another way to structure it if people think it will make more sense.

Edit: I had to pull this into a new thread as I wasn't aware of the 10k character limit on a post so my original bug report became too large to fit in the first post of the thread!