I upgraded recently to version 1.26.22.54 of Cool VL Viewer for Mac, and I've noticed some strangeness about the behaviour of the Ctrl and Cmd ⌘ keys in keyboard shortcuts. I have tested this both with my 3rd-party Matias Tactile Pro keyboard, and two "official" Apple keyboards, and got the same results in all cases, so this doesn't seem to be a quirk of my keyboard.
For example, up to 1.26.22.51 pressing Ctrl-Opt-T and Cmd-Opt-T did the same thing, toggling on and off Highlight Transparent. Now, in 1.26.22.54, pressing Cmd-Opt-T will toggle
on Highlight Transparent, but won't turn it
off. Ctrl-Opt-T works the same in .54 as it did in .51. In another example, pressing Cmd-G will display Active Gestures floater, but pressing it again will not close it.
The same quirk seems to operate in reverse too. If I press Ctrl-Opt-T to turn
on Highlight Transparent, I can turn it
off again by pressing Cmd-Opt-T, but pressing Cmd-Opt-T again will not turn it back on. Similarly if I press Ctrl-G to display Active Gestures, I can close the floater by pressing Cmd-G, but pressing Cmd-G again will not re-open the floater.
The same basic pattern seems to apply to all Ctrl-<keys> and Cmd-<keys> shortcuts: Pressing Cmd-<keys> will toggle the command away from whatever state it is in, but will not toggle it back. Ctrl-<key> will toggle the command both ways as expected.
The obvious work-around to this quirk is to ignore the Cmd key entirely, and only use the Ctrl key, but this inconsistent behaviour of the keys is peculiar.