Added that workaround and it appears to be working. Haven't had the issue yet. Going forward, I think fluxbox should have a separate post-startup file that get's invoked, once fluxbox has fully started. This way users wouldn't have to use sleeps to delay things like xcompmgr.
Note that with fluxbox-1.3.7-1.fc25 and xcompmgr-1.1.7-1.fc25, this happens almost every login and takes 4-5 fluxbox restarts to get a correctly drawn toolbar. Here is my current ~/.fluxbox/startup file. https://github.com/postmodern/dotfiles/blob/23bdcd3d5f00c42f259c77f56d9cfba9f4e56078/.fluxbox/startup
It is definitely inconsistent and surprising. I would expect left/right click to...
_MOTIF_WM_HINTS not found on both decoration and decoration-less windows.
Ah ha. Feel free to close this as a duplicate. I'll look into trying to disable Client-Side...
Spawned window can spawn on a different workspace, if workspaces are switched
This seems to be 80% reproducible when switching to another workspace and opening...
https://raw.githubusercontent.com/postmodern/dotfiles/master/.fluxbox/keys Only have...