In this image I am viewing the April calendar. The ticks and crosses show the availability of other tabs.
(confusingly, some crosses went green in my editing! :D)
What you were expecting to happen, and what actually happened:
I cannot select an adjacent calendar tab when browsing the various game calendars.
I must first select a non-adjacent tab before choosing the desired tab.
How often does this happen? When did it begin happening?
Inconsistent behaviour. Sometimes it does, and sometimes it doesn’t switch
Steps to make it happen again
Open the game calendar screen and try to display a calendar tab adjacent to the current calendar tab.
edit: It seems that one must hit the part of the adjacent tab that is furthest away from the current tab in order to change the selection.
It’s more interesting than that (and works the same on PC as well, as far as I’ve noticed).
It doesn’t matter where you click on non-adjacent tabs - everywhere works.
Switching between adjacent tabs only the farthest side works, clicking on closest side does not. (Namely, you can switch from April to Revered if you click on letter R, but not if you click on letter D; likewise, switching from April to Spring 2023 works if you click around 2023, but not of you click around letter S. )
With all respect @Bramble, there is sufficient detail in both my and @Dust_Angel’s post above for an english-speaking Dev to understand and replicate the issue. With the calendar reset now reducing the number of tabs to 3 it is not something we can replicate anyway, making the request even more disingenious.