probable error with regular expression matching

[pfps]

https://qlever.dev/wikidata/jGLFmj

returns four results where the first letter of the label is not M

<http://www.wikidata.org/entity/Q131584179>	".MAR"@en
<http://www.wikidata.org/entity/Q131584179>	".MAR"@es
<http://www.wikidata.org/entity/Q131584179>	".MAR"@mul
<http://www.wikidata.org/entity/Q1430616>	"magnet"@gu

This is query 36 from your WDQS benchmark query set.

[RobinTF]

I didn't check directly, but I assume that this only affects entries that were added using SPARQL update. So after a rebuild the issue might be gone.

EDIT: No, that's not the issue.