Chapter lock due to group's policy with availability time point in the (distant) past

[Tanterei]

I have run in a weird problem with chapters of some old mangas. Specifically "Id - The greatest Fusion Fantasy" and "...shomin smaple...".
For some of the older chapters the system displays the following message:

Warning: Due to the group's delay policy, this chapter will be available 1 year ago

This appears to be a bug.
If not, then I suggest to completely remove the chapters, thus stating that they are unavailable. The way it currently is suggests that the group has a delay policy in place, but with the deadline *way* overdue.

 

[Thoraxe41]

Which chapters of Shomin Sample? The few I tried were ok.

 

[Tanterei]

For me e.g. Ch.71 doesn't work. But then again, it's not displayed as available on the ToC of the manga, but is selectable from the chapter drop-down (all up to 81.5, which is timed at "6mo ago").

 

[Thoraxe41]

Alright after doing some checking. I believe it's because the group who orginally translated the last few volumes took down there work when they left MangaDex due to reasons. One dude is slowly replacing the works but yeah. The drop down thing with chapter 71-80 something is just bug/website issue. They don't exist on the site anymore and won't actually pop back in 1 year.