I dont know if anyone noticed but there are two scenarios where if your browser is not 100% zoomed in, it messes up your view.
These bugs mess me up a decent amount and wanted to see if others experience this too.
Unfortunately, Workfront only supports 100% zooming option. But if you submit an idea to the Idea Exchange to change that, I'd up-vote it.
Heather is correct in that 100% zoom is currently what's supported. We are working on becoming WCAG 2.1 compliant, which will support 100-200% zoom.
However, calendar areas under 100% zoom can display oddly and at the moment we do not have plans to change this functionality.
Heather's Idea would be best to follow through.