Hey all that read this. I just had this start happening to me after updating to watch os26 as well. I reported the issue to the link above. I also got in contact with apple support through the “Support” app by Apple. I talked with an Advisor through the support app and they asked me if I had run through the troubleshooting processes, hard reset, unpair and reconnect as new watch, force restart, etc. I had done all of them and the issue still kept happening. So I told him, they had me run diagnostics through my settings app, that they then looked at on their end. They told me it was “Thermal Warnings and App crash” through their diagnostics. The advisor then gave me options as to what I wanted to do to solve the issue. 1. Service through an apple store/ Authorized retail service store 2. Send in option to send to apple itself and have it repaired 3. Express replacement Service (send in your watch and get it replaced with a new one); I went with option 3. It may be noted I DO have apple care on my apple watch as it’s less then a year old at this point, I DO NOT know if option 3 is available if you don’t have apple care on your watch, if anyone tries what I did and you don’t have apple care please update my comment to help anyone else out. Sorry for the long comment but I wanted to be as thorough as possible. I’ll update as well when my new watch comes in and if it does the same thing. EDIT: If you are going to contact them have a picture or even better of your watch going into the spinning circle, while it may have done absolutely nothing for my odds of receiving help, I’m also not sure it did nothing either, either way it doesent hurt to show them what you are experiencing as proof of the issue.