After the last WP update 5.3.2, things go wrong with the Tempera theme. The empty space that normally comes under a gallery has disappeared and the text or another image has been added to the gallery, so without empty (line) space.
It can only be edit under text (normally visually) by manually entering the code:
Not handy if you use it a lot!
See URL below, please scroll down a bit to see what i mean.