Metronome On/Off & Metronome Volume for Deck 2 not key mapping correctly

Hi,

For some reason the "Metronome On/Off" and "Metronome Volume" for Deck 2 don't key map properly with certain keys. I wanted to map Metronome On/Off to the "=" key and Metronome Volume to "shift + =" but when I did this they didn't work. Separately, I mapped Metronome On/Off and Metronome Volume for Deck 1 to "-" and "shift + -" respectively and they work fine. I am using Rekordbox 6.4.2.

The mapping for Deck 2:

NB, I did a bit of testing and swapped the two round (ie, mapped Deck 1 to = and shift + =, and Deck 2 to - and shift + -) and again the Deck 2 mapping didn't work and the Deck 1 mapping did. But what's weirder is that when I mapped the Deck 2 Metronome On/Off and Metronome Volume to other keys, eg, numbers or letters, the mapping did work.

I tried the same thing on my second laptop which also has Rekordbox 6 installed (version 6.0.3) and the same thing happened.

Cheers,

Ben