Apps keeps opening itself on the Apple Watch ultra

I have applications on my Apple Watch Ultra that keep starting by themselves. The applications are associated with a complication that's on the current watchface that I'm using but it's not always the same one. I'm trying to identify a specific pattern, i.e. is the complication in a certain corner, for an app in the center of the face, etc... Happens regardless of what I'm wearing (long or short sleeve) and assistive touch is OFF.

Pretty annoying..