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annotorious / annotorious-openseadragon

An OpenSeadragon plugin for annotating high-res zoomable images
https://annotorious.github.io
BSD 3-Clause "New" or "Revised" License
121 stars 43 forks source link

Cannot read properties of undefined (reading 'toLowerCase') #209

Open vitali-paladi opened 1 month ago

vitali-paladi commented 1 month ago

Hi,

There is a bug on chrome, Cannot read properties of undefined (reading 'toLowerCase') image image

In code we have: document.addEventListener("keydown", this.onKeyDown), document.addEventListener("keyup", this.onKeyUp)

This bug happens because on unmount component there is no removeEventListener for keydown event (for keyup we have)