I was able to find a more suitable work around for this issue. There is a post here How to fix work week calendar missing days in Microsoft Teams – Business Tech Planet
If you work through the following instructions, it will lock your "Work Week" and "Week" to show Sunday-Saturday, but it will also provide the correct event and appointments on their respective dates.
Firstly, open Office 365.
- Now click on “Outlook”.
- From there click on “Settings”.
- After that click on “View all Outlook settings”.
- Now click on “Calendar”.
- Once you are in the calendar section, click on “View”.
- From "Work hours and locations”, select all the days of the week.
- Click Save
- Restart Teams and reload your calendar
- Selecting "Work Week" or "Week" should display a full week schedule with the correct appointment dates
As a user who has the New version of Teams NOT approved by our IT department, unless there is a true fix for this it looks like this may be the best work around we have.