fitness+ app crashing since updating to iOS 18.4

Hello!

Since I have updated my iPhone to iOS 18.4 the fitness+ app is crashing multiple times throughout my workouts, no matter the length or type of the video involved (error message: cannot play video - the video for this workout is unavailable at the time). At least I can resume the video every time, but it’s very disappointing that it is interrupted every 10-15 minutes or so for no reason. I use an hdmi cable with my iPhone to get the workouts on my tv screen, never had such a problem. It’s working very well with YouTube videos for example without any interruption.

I believe it’s a software issue - anyone else having a similar problem?