Achievement Dates Getting changed

i do not know if anyone have noticed The achievement Dates are getting duplicated after we have enabled merc mode . Those achievements we had achieved long ago are getting changed to latest dates . Anyone have noticed This issue ?

https://i.imgur.com/vBNMpNM.png

https://i.imgur.com/p9NG0Nf.png

Looks like something that belongs in the bug tracker and not here.