Month view header glitch

When i load a big dataset i get the following glitch. Is it something on my end or… ?

Hello @Nikolai_Dimentiev,

It’s hard to suppose what exactly goes wrong without more details as it may be connected with various reasons, so it will be helpful if you reproduce the issue in our snippet tool:
https://snippet.dhtmlx.com/ae4l44qr
(open the snippet => reproduce the issue => click the “Save” button => post here the new link), or provide more details on how to reproduce it.

Kind regards,