Tippy Tooltip’s js script injected via editor_will_load_note hook causes an error:
Uncaught TypeError: Cannot read property 'editingArea' of undefined
at Object.initNote (tooltip_injector.js:18)
at <anonymous>:1:263
Which results in js script added by other addons via editor_will_load_note hook after Tippy Tooltips, to not run. This bug is observed on Anki 2.1.45, and seems to be fine on 2.1.49.