There seems to be a bug in the sim where if an attitude indicator is setup
with both bar adjustment and caging capability, the attitude indicator may be
toggled to a caged position but is unable to be released. This can be seen
when using the attitude indicator template without any properties that exclude
bars adjustment or caging, as I had done on my current project. Most default
aircraft have only one function or the other (caging OR bars adjustment), with
an exception being the Microsoft PC-6, where this bug can be replicated on the
standby attitude indicator.