If I insert a gallery block, I can add captions to the images. But if I subsequently edit the gallery (perhaps to change the order of images), the captions already added are lost. If there are many, it is extremely tedious entering them again.
As far as I can determine, if Advanced Gutenberg is not active, the gallery block uses the image caption. If the plugin is active, it seems to ignore the image caption in the media library and you have to add one again. But this type of caption is lost on opening the edit gallery function, even if you do not edit anything.
Have I got this right? I think it would be much preferable to use the caption from the media library and to make it endure when editing the gallery.