I cannot get Keyman to type any characters at all in the search box for Adobe Reader DC. I tried 3 different custom keyboards and none of them would type any characters (special characters or “regular” characters). All 3 of these custom keyboards work fine in other applications.
Another user is reporting a similar (perhaps the same) problem.
I’m not sure if this is a Keyman bug or an Adobe bug.
Windows 7 SP1
Keyman Desktop 10.0.1205.0
Adobe Reader DC 2018.011.20058
P.S. Is this the right place to report a bug like this?