Unable to assign keyboard shortcut for Retrieve metadata for PDF

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Hello,

Thank you again for your work on Zutilo. I hope I'm posting these issues appropriately. I'm still new to Github.

I am trying to assign a keyboard shortcut to "Retrieve metadata for PDF," and the first few attempts would allow me to assign some (but they did not function due to another issue I've opened another ticket for where odd characters appear, so I had to try alternatives).

However, eventually I was no longer able to assign shortcuts. In the list, the doesn't show (does when selected), and any shortcut entered isn't applied upon clicking "Apply." Here is a gif to better illustrate:

Thank you so much for your time!

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Update: Was able to resolve this (however have a new issue that I've made another post for).

In case anyone happens upon this, I thought I’d provide how it was resolved: Following input on another issue, I went into the about:config of Zotero (via Preferences > Advanced > Config Editor) and was looking at the Zutilo shortcuts JSONs and saw a broken character in the one for Retrieve metadata for PDF.

Once I set it back to the default, it lets me assign within the Zutilo preferences interface.