[Bug][Scheduler] Items overlap in MonthView

[Yanko-Georgiev]

I'm submitting a...

• Bug report

Current behavior

Currently, Items in MonthView display not as expected as they appear on top of each other.

Expected behavior

Items to display properly without overlapping.

Minimal reproduction of the problem with instructions

1. Open this example https://stackblitz.com/edit/react-ls1rep-5sgprt?file=app%2Fapp.jsx.
2. Notice that on Wednesday 4th September the items display incorrectly.

Workaround

Clicking over the items fixes the issue. Reducing the itemsPerSlot value to hide one of the elements inside the column for Friday 06.09 also triggers the items to display correctly.

Here is an example with itemsPerSlot set to a lower value: https://stackblitz.com/edit/react-ls1rep-mf6pn2?file=app%2Fapp.jsx

Related to Ticket 1664304.