Please be so kind as to read my full post before responding.
Thank you for your consideration.
I am currently in the midst of trying to build my first responsive layout (i.e. one App for Tablet/Phone/Landscape/Portrait) PowerApp.
I cannot actually test this PowerApp inside PowerApps Studio because expressions which depend on App.Width, App.Height appear to be fixed/replaced with App.DesignWidth, App.DesignHeight (i.e. the dimensions you set for the PowerApp in App Settings, Screen Size + Orientation) within PowerApps Studio (including the Preview with F5).
Thus, I can only Save + Publish my PowerApp and then use Play from the list of Apps in web.powerapps.com for testing (the actual Screen Size/Window size dependent parts) of my PowerApp.
However, there is inherently some sort of delay (server-side) before Play actually shows me the latest published version.
I don't know how long this takes or is supposed to take.
From simple Trial & Error, I have experienced Play showing the latest published version anytime between a dozen of seconds to a few minutes.
Hi @SaWu ,
I've made a similar test and found that the delay indeed exists.
I'm afraid there's no very good way to improve this.
Our technical team is trying their best to improve this platform. I belive this situation will be better in the future.
Here are some tips that can improve the app performance for your reference:
What's more, you could try to clear the browser's cache and update it to the latest version.
Community Support Team _ Phoebe Liu