Channel Calendar disappears from the tabs after about 3 seconds.

[alast120]

When adding a Channel Calendar, it disappears from the tabs after about 3 seconds. I can see the calendar being added, then it disappears. I tried the Teams desktop app and the web version, and the behavior is the same. 

[#2]

@alast120 , did you ever figure it out ?

It keeps doing that for me, even with a different user created just for testing this, and even if I create a new team

[#3]

I was trying to add it to a Private channel and it is not possible. The Channel Calendar only works for public channels.

[#4]

Thanks for sharing what you discovered, but that's dumb, it should work for all channels@alast120 

[#5]

@alast120  Same problem. Private team, open channel. Any solution?