Content in Sharepoint Page have a bug

[Amamiya_]

Its seems like I got a bug in Sharepoint Page that some content are disappearing.But when I click edit, page all the content still there and look normal, then I click republish after that it's looked the same as the pictures I have attached.

[#2]

@Amamiya_ I have seen this behaviour on some tenants too. The behaviour I see, is that when you navigate to other pages using navigation or links on a page, some web parts are sometimes not displaying. When you refresh the page in your browser, everything is there again. 

cc. @Anton Labunets