I thought this might be a video driver problem but the same happens on my laptop (Intel HD Graphics) and on my desktop (NVidia) so that seems unlikely at best. Starting from a 100% default configuration, I added different light colour backgrounds for Source/Dest and darker backgrounds to show when a quick filter is in play. Per screen grabs below, when I invoke the quick filter, only 1 row is marked with the darker colour. As soon as I type another character or click the LMB, the rest of the panel is marked. Is this working as designed?
Regards, AB