Well… If you check out Unable to post multiple `K:` events in one go
and Multiple Key-events in one calculator code - only last is triggered - Aircraft & Systems - Microsoft Flight Simulator Forums you’ll notice that the calculator codes simply don’t work reliable in 2024.
See Some InputEvents don't work when sent via execute_calculator_code() as well.
So there ist no option to support 2024 using the legacy gauge API - AND provide a reliable application as it seems.
This in conjunction with Focus on Pop-Out Window disables Aircraft controls - #14 by FSC740 - Hardware & Peripherals - Microsoft Flight Simulator Forums ist the reason why for instance for Homecockpit builders MSFS 2024 is awful currently.