NewsReader Brief is not able to search for numbers

Hello,
recently I installed the newsreader brief and I want to search inside a news feed for a number like 0804 but it does not work. Any normal character search like ‘build’ works fine but if I try to search for a number the result is empty.
Kind regards

If this is an add-on you’re talking about, you should try contacting the developer about this first.

Hello jorgev,
you gues right, I’m writing about the firefox add on brief. I now have created an issue, hopefully in the appropiate git list.
Kind regards