I just got the feedback from a customer that the tooltip in our product displays weird characters. He sent me the following screenshot:
I have never seen something like this occur and we have tested it on multiple systems. He says he is on a macOS Mojave v10.4.6 machine using Reaper.
The tooltip is defined by using the setTooltip() function on a button.
Has somebody an idea what could cause this problem and how to solve it?