Same! At first it worked if you wrote the caption first I found but now that doesn’t seem to work. Hit and miss. nostr:npub12vkcxr0luzwp8e673v29eqjhrr7p9vqq8asav85swaepclllj09sylpugg ?
Discussion
This might be a bug but I’ve found that after I upload an image, the caption has to be modified in order for the post button to be enabled again. Hope this helps.