Hey all, just noticed something recently, when viewing the calendar in monthly view and scrolling down to the next week or up to the next week.. It seems to sometimes display "Week" which is a bug?. but if I scroll down to the next week it shows "Week 3". WTF lol
If I go to the next week and then back to previous one it will then be displayed right....
Literally just pulled out my phone to check as I read your post and mine is totally fine. Mine goes from week1-week5 in that month. Also if I keep scrolling down the week number just increases.
Try a battery pull. If that doesn't solve it try wipeing your device (make a back up on the computer) and the re-install your stuff.