File manager thumbnail for mkv broken

is it just me who has problem with video thumbnail for mkv file?
it did not generate thumbnails for newly created mkv file for me.. which is kinda weird that it is the only extension that is affected and not mp4,avi or whatever

i’ve check ffmpegthumbnailer.thumbnailer and the entry for mkv is still there.. anyone has a similar case?

i also delete my cache for thumbnails and now all my mkv file dont have thumbnails :sweat_smile:

nevermind i find similar case on the internet and it said the issue it caused by shared-mime-info 2.5.1-1 downgrading this will fixed the issue or just edit thumbnailer file and add video/matroska;
link of similar case:
https://bbs.archlinux.org/viewtopic.php?id=314153