mergDocCanOpen opens iOS sharing menu

[Ralf Bitter]

Seems there is an issue with mergDocCanOpen(). Whenever this function
is called the iOS sharing menu shows up for a short moment at the top
of the screen. I am running LC 9.6.0 (rc1) and iOS SDK 13.2. The particular
script including this function worked fine in earlier versions.

Does anybody have a recipe to avoid this undesirable behavior?

Ralf