My config: 2x TV Firestick, one with Kodi NEXUS 2.02 and the other with Kodi 2.05 Android. The Rapier Version was changed from 13.0.11 to 13.0.14 via the repository.

Pictures are stored in my NAS same folders like the movies too. All movies working well, but the picture not.
The following happens: no matter what type of pictures PNP,JPEG,JPG,WEB..... the prescan pictures of the special folders are working well, but if pressing the button for getting the big picture on the screen, it will get opened and placed full screen, but most pictures are only ON for round 10 seconds, then OFF and the folder with the short prescaned pics is shown again.
Sometimes I can get the picture staying fullscreen , maybe after the second, third, fourth, fifth try....and sadly sometimes never. Within the short 10 seconds of fullscreen picture it can also be screwed 360 degree, that works well, but then after 10 seconds .... the shortpic folder back again.

Now I tried all of the other installed SKINs like : ESTUARY;CONFLUENCE;AEON NOX SILVO;EMBUARY . ALL of these skins working very well with the pictures as it should be in fullscreen, without doing any changes of the Nexus KODI parts or anything in the KODI menu.