Are there missing settings?

[kdemeoz]

Well, i found the concept of different users having different installation Settings' appearances quite fascinating [no life], so thought i'd dig a bit more. I came up with a partial explanation, but unfortunately also with a deeper mystery.

As well as my "real" Maui OS, i have four Maui VMs, so i fired them up today. By playing around with combinations of settings in them, i can make that spanner icon appear or not appear. My preferred combo, which happens incidentally [it was not my specific plan] to generate those icons [as per my previous picture attached], is:

• Look & Feel = Maui Plasma
  Widget style = Breeze
  Window Decorations = Plastik
  Desktop Theme = Oxygen
  Icons = Oxygen
  GTK GTK2 Theme = Crux, GTK3 Theme = Breeze, Show icons in GTK buttons = Yes, Icon theme = Hicolor
  

Obviously therefore, as predicted by DrGeoffrey, you must each use different combos to me. Hence the spanner icon puzzle is solved.

Conversely the mystery has only deepened as to "Workspace Appearance" vs "Desktop Appearance".  Here's my "real" Maui:
   

Here's Rob's at Linux Quest:
   

Both of you had "Desktop Appearance" like Rob.

One of my VMs also has "Workspace Appearance" like my "real" Maui, but the other three have "Desktop Appearance" [yet all my VMs & my "real" Maui were installed from the same maui-1-64bit.iso (SHA-512 74d057fce2aa0e8a4503b7cd8ba459cf1fcd11173b3527d6e7b0372ef4eec118ce163a70bb9e1b0714c7e00f425cc402bd0e7a1edaa9055c3f3ef4bbeae86be5), Build Version 20160811.1611]. 

This is collectively all rather weird!