Hello everyone, I hope I understand correctly how to use this mail-thread. Thank you very much for such a great enhancement of Org-mode LaTeX preview capabilities. I am on macOS Big Sur and have some troubles with dvisvgm preview in your particular fork. Everything works just fine in stable release of Org-mode, and in your release dvipng method work almost as expected. dvisvgm preview method actually generate svg’s in /var/folders/3m…, but don’t make an overlay after all and equation environments remain being formatted as text.
Best wishes, Yaroslav