Changing server temp variables in GBS debugger can yield authErrSegWrite
In the GBS debugger, when changing a temp variable in a server context,
the debugger attempts to change the segment of the newly-compiled value
to the segment of the old value. If the segment cannot be changed, it just
leaves it alone. However, there are some cases where it attempts to change
the segment and gets a walkback "authErrSegWrite". This prevents the user
from making the desired change.