Training Calendar becomes Unavailable while Editing

Hi, we was able to update a training session just fine, can I get exact Steps to Reproduce? 

The glitch is inconsistent and occasional. Sometimes it happens, sometimes it doesn't.

I just click anywhere on the weekly calendar to edit the session (for example, switch one session from defense to set pieces), and then the entire week becomes Unavailable, and I can't edit any of the Unavailable slots. Other times, the session edit is successful and the weekly program is not affected by the glitch.

I can upload my save file. Note: I'm using a mod skin (would it be the case?...).

Edited January 4 by phd_angel

The problem certainly exists. The bug happens only when editing certain weeks, not every single week of the training calendar. It was posted in another topic:

 

Hi @phd_angel

To update this thread, this is a known issue we're currently investigating. 

Hello, this should now be resolved after our latest game update.