This is a funky one, don't ask.
While trying to type pombe, I mistyped /[po in the species search form in the "Locus from reference genome" search. The app crashed and I got the following console errors:
SyntaxError: Invalid regular expression: //[po/: Unterminated character class (at index-d4b73013.js:1329:2134)
Error: Minified React error #300; visit https://reactjs.org/docs/error-decoder.html?invariant=300 for the full message or use the non-minified dev environment for full errors and additional helpful warnings.
I have not looked deeper into this, but I can tell you it does not show the same behavior in the "Gene selection" form.
We should try to catch these regex errors.