I would first try to use the other export in preferences>technology preview> uncheck "optimized export as"? then restart, and check in that version.
Then, if this works, I'd undo the change you made, but also change the language to english, by switching the install language in the CC application, then in Ps preferences>interface, select the international english version, then restart, to check if it is unique to the Dutch version.
I don't see the option you mention? Also I have this problem on my mac and windows laptop. The mac just got adobe. And I just updated my windows and now I have this problem, before the update I didn't have this problem, so I don't know how I can undo an update?
We changed the location of the option mentioned. The new Export As dialog is no longer a Technology Preview, but the default mode. However, you can still switch to the older version by going into the Export Preferences and checking the Legacy checkbox at the bottom.
Could you share or post a screen shot of your image out side of Export As? Specifcially, I would want to see the layer structure of the image.