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Power Platform Community / Forums / Power Apps / Canvas app flashes thr...
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Canvas app flashes three times on start up then stops

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Posted on by 446

As the title states, my app screen flashes three times when it starts up then stops. I figured it was something to do with an OnStart function so I completely commented out everything yet it still occurs. I've tried removing, commenting out, or turning the visibility off for controls that I think could be the cause, but nothing seems to remedy it.

 

The odd thing is that this app never used to do this. The main changes I made to it were adding a second gallery (which is copied and altered from the first gallery already present on this screen), a toggle (hidden by the small blue square in the below gif), and some new variables in the App > OnStart. I don't think I've ever encountered something like this before, and searching the forums here and the internet in general has yielded no results.

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  • Verified answer
    Gerard Simpson Profile Picture
    2,987 Moderator on at

    Hi @Ryan_B - that's a strange one.

     

    Have you tried checking the monitor and Run OnStart to see what's happening as it starts?

     

    AmDev_0-1643127051224.png

     

  • Ryan_B Profile Picture
    446 on at

    @AmDev 

     

    That's a great idea, I forgot we are capable of doing this.

     

    After starting a monitoring session and running the app, I noticed it was doing three screen navigations due to a loading screen animation I have. After removing this from the app it no longer flashes, which is great! The odd thing is that I haven't made any changes to this component and I'm using it in other apps as well, but they don't have the same problem.

     

    Either way you helped me figure out the problem, and I never would have figured this out. Thank you very much as this was driving me up the wall!

  • Gerard Simpson Profile Picture
    2,987 Moderator on at

    @Ryan_B  that's brilliant glad you're sorted. 

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