> In GNU Emacs 28.0.50 (build 5, x86_64-pc-linux-gnu, X toolkit, cairo version 1.16.0, Xaw scroll bars)
>  of 2021-06-06 built on alto
> Repository revision: d933668e2d15cbb8e1fa367d97d2bff2559ff838
> Repository branch: master-mdk
> Windowing system distributor 'The X.Org Foundation', version 11.0.12004000
> System Description: Debian GNU/Linux 10 (buster)

Here's my version:

In GNU Emacs 28.0.50 (build 6, x86_64-pc-linux-gnu, GTK+ Version 3.24.24, cairo version 1.16.0)
 of 2021-06-14 built on xo
Repository revision: 794ec934a76d0647a72b7be32e20dc5b95e5ec11
Repository branch: master
Windowing system distributor 'The X.Org Foundation', version 11.0.12011000
System Description: Debian GNU/Linux 11 (bullseye)

Looks pretty similar...  but mine is with Gtk and yours is without?
(And of course a newer version of ksh etc, I guess.)

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   bloggy blog: http://lars.ingebrigtsen.no