Hacker's Keyboard Ctrl key doesn't always work with Jump - works with bVNC

Hacker's Keyboard (more keyboard keys) Ctrl modifier key doesn't always work with Jump VNC - works fine with bVNC

Hacker's Keyboard

>Are you missing the key layout you're used to from your computer?
>This keyboard has separate number keys, punctuation in the usual places, and arrow keys.
>It is based on the AOSP Gingerbread soft keyboard, so it supports multitouch for the modifier keys.

https://play.google.com/store/apps/details?id=org.pocketworkstation.pckeyboard&hl=en

If I press Ctrl, and then <key> while using Hacker's Keyboard in Jump VNC, it might register, but sometimes it won't.
A modifier key like shift or control will sometimes remain stuck down.
The entire time, I thought it was a problem with Hacker's Keyboard.
I tried the bVNC app, and I don't have any problems with shortcuts.
I think Jump VNC has a better interface, and JumpDesktopConnect lets me use VNC with some problem applications, but please consider testing this in the future.

Another Jump VNC advantage:
With partial success, Jump VNC can do Ctrl + Shift + <key>.
bVNC mistakenly activates the "change language" shortcut of Ctrl + Shift.

But for Ctrl, and then <key>, it's only reliable in bVNC.