In my single player, Pressburg was signed. 6 turns later, Austria got an "Infringement" Cassus Belli against France. Not sure how this happened since there was peace and foreign access, but Austria declared war and France lost foreign access.
As a temporary work around (or not), I've done this which will keep Austria in line for the 48 turn peace duration, but I don't think Austria should be getting ANY Cassus Belli versus France while peace and foreign access exists. This change will also prevent Austria from violating the peace in Multi-Player.
[color="#FFA07A"]SelectFaction = AUS
SelectRegion = $Wien
StartEvent = evt_nam_FRA_PeaceOfPressburg_Timer|0|0|NULL|NULL|$Wien|NULL
Conditions
Actions
SetFacRelationships = FRA;0
RemDiploItem = FRA;$diWar
AddDiploItem = FRA;$diGiveForeignAccess
EndEvent[/color]