Odd display issue that has just come up. Using the draw_graph_from_adjacency function from the "Graph theory v1" extension causes graphs to display with huge vertex labels, but only in some browsers. It appears to be an issue in Chrome, Opera, and Edge, but not in Firefox. An example of a question using this is given below with the displayed graphs from the relevant browsers.
Tried the other extension, simply "Graph theory", and the same thing seems to result.
Example Question: https://numbas.mathcentre.ac.uk/question/113784/graphs-match-adjacency-matrix-to-a-graph/preview/
Chrome, Opera, Edge: