So I installed WallCH from GNOME Software to check it out. After a reboot, wallch has an oversized appindicator icon and stops nemo-desktop from autostarting (I have it in autostart in Budgie Desktop Settings, since I updated to 19.10, not clean-installed). Tried purging wallch + rebooting, no difference. I really don’t want to reinstall.
Here’s the error thrown from nemo-desktop in the terminal:
** (nemo-desktop:7235): WARNING **: 08:25:55.706: Current gtk theme is not known to have nemo support (materiav2-dark-pocillo) - checking...
** (nemo-desktop:7235): WARNING **: 08:25:56.055: Desktop already managed by another application, skipping desktop setup.
To change this, modify org.nemo.desktop 'ignored-desktop-handlers'.
Here: codic 13217 6887 0 08:38 pts/0 00:00:00 grep --color=auto --exclude-dir=.bzr --exclude-dir=CVS --exclude-dir=.git --exclude-dir=.hg --exclude-dir=.svn nemo
So yes, it is running. Budgie Desktop Settings has no such option:
[sudo] password for codic:
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages were automatically installed and are no longer required:
libdee-1.0-4 libkeybinder0 libunity-protocol-private0 libunity-scopes-json-def-desktop libunity9
Use 'sudo apt autoremove' to remove them.
The following additional packages will be installed:
budgie-desktop qt5-gtk2-platformtheme qt5-style-plugin-cleanlooks qt5-style-plugin-motif qt5-style-plugin-plastique qt5-style-plugins
The following NEW packages will be installed:
budgie-desktop budgie-desktop-common budgie-desktop-environment qt5-gtk2-platformtheme qt5-style-plugin-cleanlooks qt5-style-plugin-motif qt5-style-plugin-plastique
qt5-style-plugins
0 upgraded, 8 newly installed, 0 to remove and 6 not upgraded.
1 not fully installed or removed.
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For your first screenshot, I changed them, for my second, see my above reply; I have a custom value set, but the defaults seem to be not the same as yours