Gmail, am I the only one with the problem?

Question

gmail

Already 4 days ago, the "view area" module stopped working on my Gmaile in my inbox. This is a module that allows you to split the window into two parts and quickly view messages. Now all search engines work on this principle. I really like gmail, but because of this problem, it really became very difficult for me to work.
I have this module installed. It works in other folders. Already tried to work through another browser, and reinstall the module itself. But nothing helps.
Help me please. (I can’t believe that it’s just me)
It turns out that Google has tabs in the inbox. After I updated it, everything worked immediately. clip2net.com/s/i35HBe

Answer 1

When changing the theme (design), does the "view area" function remain in the field of visibility?

Answer 2

In my gmail, there is such a button (see the screen above), it just serves to quickly switch between viewing modes.

Answer 3

that's it this button I have in all folders, except for the "home" folder. This button appears after enabling the "view area" module. The module is also included.