engine.getValue("[EffectRack1_EffectUnit1]", "loaded"); doesn't work, just throws a warning.

[josefveiga]

Bug Description

engine.getValue("[EffectRack1_EffectUnit1]", "loaded"); doesn't work, just throws the warning below.

warning [Controller] ControlDoublePrivate::getControl returning NULL for ( "[EffectRack1_EffectUnit1]" , "loaded" )

But querying an EffectSlot directly for "loaded" works as expected, like so:
engine.getValue("[EffectRack1_EffectUnit1_Effect1]", "loaded");

Version

2.5.4

OS

Debian 13

[ronso0]

Oh, we need to clean up the manual, [EffectRack1_EffectUnit1], loaded doesn't exist.

If you want to know if / which effect chain preset is loaded you can use [EffectRack1_EffectUnitN],loaded_chain_preset

[ronso0]

Fix is mixxxdj/manual#898