Wappler 3.6.1 and 3.7 both on Mac do not show the secondary dynamic data selector window on the Input Data, or Query or Headers fields when I click the lightening bolt.
Interesting…I had reported this as well, but told @George it was now working, as I could not replicate any longer. ( Cannot open bindings on API properties )
I suspect a log will be helpful if you are in a state that can consistently replicate this.
On my side it does seem to be consistent, each time I add a new API Action and try use those buttons nothing happens, maybe its with my setup in Node.js / Docker Local / Docker Remote / Node 14 / not sure if any of those make any difference.
To test I restarted Wappler, created a brand new project and it works on that for some reason, in 3.7, haven’t tested 3.6.1 again though. Seems strange though.