Custom Form in List is Blank, Default SharePoint From Works

[RDR]

I built a list in Office List and the default SharePoint form works well in it. I would like to customize the form, and I tried doing it with PowerApps, but each time I tried using it, the popup form only shows a blank square. If I copy the link to my list object and open  it in a new browser tab, my custom form appears and works fine. Any idea what I might be missing? That seemed so simple in the instructions, I do not understand why this is not working.

Thanks for your help

[RDR]

Here are some pictures, to help explain it a little bit better, with the custom form, and with the default SharePoint form.With Default SharePoint Form

[WarrenBelz]

@RDR ,

What does your custom form look like in Design mode in Power Apps (please post a screen shot) and what is the Item and DataSource of the Form?

[RDR]

Hi @WarrenBelz 

Thanks for responding.

Please see the attached screenshot. I really did not do much to it, trying to use as much as what PowerApp already sets up when using the customize feature from Office Lists. 

The Item is : 
If(IsBlank(SharePointIntegration.Selected) || IsEmpty(SharePointIntegration.Selected),Last([@'test list 2']),SharePointIntegration.Selected)

The Datasource is : 

[@'test list 2']

List Form in PowerApp

Thanks again for your help.

[WarrenBelz]

@RDR ,

I was hoping to see something non-standard there (to explain the issue), but as you have noted, you have not changed anything.

I suggest you delete the form and start again.

Please click Accept as solution if my post helped you solve your issue. This will help others find it more readily. It also closes the item. If the content was useful in other ways, please consider giving it Thumbs Up.

[RDR]

Thanks  @WarrenBelz 

Unfortunately, I already did that many times, and on different lists. This all started with a more complex list and form, and I diminished it to that very simple example, which still does not work. I am wondering if there could be a setting or permission issues with my environment or my browser (although I tried Chrome and Edge) and even tried it on my iOS phone browser. All tutorials on customized forms seem to work well, but for me, I keep getting the blank popup. It is also interesting that the form works when opened as its own link in a new tab (doing copy link and pasting it).  Any help would be greatly appreciated, this should have been a very easy thing to do, so it has been quite frustrating to be stuck there.

Thanks again.

[WarrenBelz]

Hi @RDR ,

I have never encountered that - I suggest you lodge a Support Ticket with Microsoft

Please click Accept as solution if my post helped you solve your issue. This will help others find it more readily. It also closes the item. If the content was useful in other ways, please consider giving it Thumbs Up.

Please click Accept as solution if my post helped you solve your issue. This will help others find it more readily. It also closes the item. If the content was useful in other ways, please consider giving it Thumbs Up.

[RDR · Accepted solution]

I may have solved my own issue, but I think it might point out to a bug or at least something that must be made more clear.

I was trying to do all this from the Office Lists App, in my own personal cloud space on a list that was not shared. When I started the process from a team in MS Team, inside a private channel, then the list was actually linked to a valid SharePoint, and in that situation, my custom forms work well. They work in a browser, and as an Extra tab in the TEAM environment.

For now, this will satisfy to do what I need.

Thanks for confirming that was I was seeing should have worked.

in a LIST from MS TEAM