NOTE: As of August 5th, 2020, I've included a segment on Dataflex here which might lead toward WHY this is the case and WHY they may never fix this!
I've done a bunch of testing on this last week just to see if there was some magic formula that I'd missed. And while there are of course some weird workarounds of sending the data to "something else" that then your app reads it out of when it starts, that's a horrible solution. Particularly when Microsoft wants us all to now work all day inside of Teams.
You can, of course, hard-code a parameter when you add a link to a Website and it will work. However, you can't change it at run-time.
NOTE: Dataflex data stores show us a path forward through this. It seems like Microsoft is adjusting how we link items from within Teams and share them w/ PowerApps is changing. I would HOPE that this is one problem that will be addressed, but perhaps not via passing data within the URL.
I've done a bunch of testing on this last week just to see if there was some magic formula that I'd missed. And while there are of course some weird workarounds of sending the data to "something else" that then your app reads it out of when it starts, that's a horrible solution. Particularly when Microsoft wants us all to now work all day inside of Teams.
You can, of course, hard-code a parameter when you add a link to a Website and it will work. However, you can't change it at run-time.
NOTE: Dataflex data stores show us a path forward through this. It seems like Microsoft is adjusting how we link items from within Teams and share them w/ PowerApps is changing. I would HOPE that this is one problem that will be addressed, but perhaps not via passing data within the URL.