No, perhaps I was not clear. Just about the only thing that keeps you from using es is having a flash unit attached.
I regularly use electronic shutter with very long exposures when I am outdoors, it saves wear and tear on the mechanical shutter. So something else is going on. Try a full reset and see if that clears it up as well as making sure you have the latest firmware installed.
Having tethering would be nice, but Fujifilm seems to have saved that for the X-T3, X-T4, etc.
Ah, that's probably what it is then - I'm using a slow exposure and no flash. I just have the 1st and 3rd options on my menu. I bought a mirrorless camera because I thought it would be better than my dslrs but it's pretty useless for what I wanted it for. No live view/tethering And can't even use the electronic shutter Yet I can take a 4k video. It doesn't make sense that I can do that but can't take a still.
That is odd, there are very few other settings that limit using es. Having a flash unit attached is one, but I would have thought that would also keep you from using ms+es.
Mines does this:
Have you upgraded to the most recent firmware?
This may sound drastic, have you copied you settings down somewhere and tried a full reset?