Toolbar buttons suddenly disappeared from all my form applications in Dev mode.
Checking and unchecking Enable Use of Security has no effect.
The only way I can get the buttons to show up is to empty the sec_apps table and the sec_group_apps table.
With the tables empty I can synchronize the application and reconfigure security access, but once the data is saved, once again the buttons disappear.
Thanks.
Netmake security module is all screwed up. Endless problems, due to the bad design. On top of that the buttons not showing up happens in regular forms as well. I just experienced that too. The CANCEL button suddenly gone, and I am not using security module at all 
this is ongoing problem for years
one day it all works, then next day it doesn’t
I believe the problem lies in SQLite SC use to store information and the data get corrupted OR not updated. Poor communication between SC and SQLite (browser Cache is often to blame as well).
one thing to check if is all Forms have a Primary key selected