Tiled windows don't look tiled

When you tile a window, say to the right with Tiling Assitant, it retains the round edges and still looks as a non-tiled application.

Here's some pictures for reference

Tiled window using GNOME native tiling

A closer look at the bottom right edge

Tiled window using Tiling Assistant

A closer look at the bottom right edge

Possible solution

Now I think this can be solved by adding the relevant tiling styles to a tiled window. For example, the above extension gets the tiled-top, tiled-left and "tiled-bottom` classes.

Here are the relevant styles in libadwaita,

It would be nice if Tiling Assistant could add these styles too.

Start by tracing how Tiling Assistant identifies and updates tiled windows, then compare the linked libadwaita window styles for the tiled-top, tiled-left, and tiled-bottom classes. Done means windows tiled by the extension visually match natively tiled windows, including their corners; verify the result with the tiling actions described in the issue.