Huss
Veteran
no problems. However I have not been using big, heavy lenses and sensor reflection might have happened but I had not noticed or identified as such
googling brings up plenty of examples of sensor reflections. Pretty much one needs pin point light sources to make it happen.
The fact that Sony fixed the lens mount on the A7ii series (as well as the reflections) shows they acknowledged the issue.
By the way - I really enjoyed looking at your Flickr albums! Very nice work indeed.