originated from LaTeX renders incorrectly in tables - #9 by dawni.
it seems tables get their own editorview (please document this), causing tooltips to render twice, one inside the table for the editorview of the table and one outside. See CodeMirror Tooltip Example for an mwe.
And in tables and canvas the tooltip gets cut off, this can be mitigated with the editorextension tooltips({parent: document.documentElement}) I think?
(or something along the lines of this in a ViewPlugin where it reconfigures the parent using the activeDocument), but would rather have this handled by obsidian than plugin devs.
or at the least documentation mentioning it.