pfSense

While adding rules, editing alias, NAT, Packages.. etc. from different computers at the same time a bug comes up, rules or aliases change their position.
once Save button is clicked on computer number 1 information changes on the XML which till this point it is ok, but if another user
was editing an alias or a rule at the same time and hits Save a few moments later, the information tends to be corrupted, saved in a totally different alias, or simply does not saves
which causes a complications when 2 or more admins are working on the firewall

This behaviour can be reproduced by editing/creating editing/editing 2 aliases or more at the same time by different users, also adding NAT or firewall rules causes the same issue