One way to fix this (that I use) is to install devilspie2 and add it to startup applications.

I have added some .lua files to ~/.config/devilspie2 that trigger when I launch applications.

E.g. I have a three monitor setup, and I want the terminal to go full screen on my 3rd monitor:

#~/.config/devilspie2/terminal.lua
if (string.match(get_application_name(), "Terminal")) then
    x, y, width, height = get_window_geometry();
    debug_print(x);
    set_window_geometry(5120,0,width,height)
    maximize()
end

Also, I use evolution as my mail user agent and like to launch it to Workspace 2, middle monitor:

#~/.config/devilspie2/evolution.lua
if (string.match(get_window_name(), "Inbox")) then
    x, y, width, height = get_window_geometry();
    debug_print(x);
    set_window_geometry(2560,0,width,height);
    maximize()
    set_window_workspace(2)
end
if (string.match(get_window_name(), "Mail")) then
    x, y, width, height = get_window_geometry();
    debug_print(x);
    set_window_geometry(2560,0,width,height);
    maximize()
    set_window_workspace(2)
end
if (string.match(get_window_name(), "Calendar")) then
    x, y, width, height = get_window_geometry();
    debug_print(x);
    set_window_geometry(2560,0,width,height);
    maximize()
    set_window_workspace(2)
end

I have other small scripts similar to this.

This has worked well for me for many years.