Sierra Appstore Update screen is no longer GUI

G'Day,

I am continuing to run Sierra on my iMac.

When I go into the Appstore App and select the Update tab at the top of the opening screen an HTML type screen appears rather than the usual GUI interface AS on the Featured, Top Charts and Purchased screens.

The Update screen no longer supports the standard way to update Apps or to hide incompatible apps which is an essential feature when running an earlier version of OSX.

I have checkED on other apple computers running on Sierra and High Sierra and they are doing the same.

However, Catalina has a completely revised GUI interface.

Have users on these versions being abandoned or is this just a widespread glitch?

Views Welcome :)