"select all" in clipboard manager

I just tried your clipboard manager for the first time, looks great. However, when clicking through the history and putting the cursor on the contents, i tried pressing command+a to "select all", and it did not work.

Am i missing something i need to do? Select all seems like an obvious feature and i was surprised it didn't work.

I can confirm this is happening, and share this request.
The expected behavior is for the saved clipping entry's text to be select-all'd when command+A is pressed.