I just noticed a wrong behavior in Label Text selection:
if you select all and shift-Left-Arrow thrice (or twice or ), nothing happens.
Why that ?
Suppose you do not want to copy the last n characters
If you want to copy the whole text excluding the last n characters, place the cursor at the left part of the text , press Shift-Command-Right_Arrow and then press as needed Shift-Left-Arrow.
This is on macOS / 2019r1.1 (and some priors). No idea for 2019r2.
In a project, I shadow whats in a Listbox into a Label (located at the windows bottom), with stats at the Caption beginning (left). So I start by removing these, then sometimes I use Select All (Cmd-A).