[Plugin: Collapsing Links] Display Incorrect After Expanding

This plugin was working for me fine and dandy for months… until the last upgrade.

Now, after expanding a link category, the ‘+’ sign turns into a numeral ‘1’ (instead of ‘-‘ sign) — and doesn’t change back to a ‘+’ sign once collapsed back down again. In order to get the link category to display the ‘+’ sign again on that collapsed category, you have to reload the whole page.

Also, previously, an expanded category would remain expanded – even after reload. Now, the expanded category collapses again on reload.

I suspect these issues are related.

(And, for diagnostic purposes, the same result happens on Mac OSX Firefox & Safari, as well as Windows XP Firefox and IE.)