This issue could be mitigated by setting the Height property of affected cards to a small value (say 5). The Height property is only a minimum. If the contents are larger, the actual height of the card will grow to fit the contents.
If this is the problem you are facing, the fix will be coming soon.
@tahoon Thanks for the response. Please see more detail below.
I am working on a sharepoint list linked PowerApp. I am using 5 global variables for a "tabbed" UI feel. For no apparent reason, when switching between tabs, the height of the datacards will expand to an excessive value.
I am in the process of a 3rd complete build. I'm basically monitoring for the issue, then back tracking to the latest save before the issue began to present.
No clear cause or remedy.
@tahoon Thanks again for taking a moment to help.
Can you describe how the tabs are set up? Which controls have their Visibility property change, and what is the expression of the Visibility property?
Does the bug happen in Studio also or only when playing the app? If it happens only when playing the app, ensure that the latest changes have been published (not just saved).
The tabs are buttons with an OnSelect value of Set(varformtab = "Header1"), Set(varformtab = "Header2"), etc. The data cards have a Visible value of varformtab = "Header1", etc... Using this I have categorized about 35 data cards.
This happens in the studio and in the app. And it doesn't always happen the first time I set a variable active. I can bounce around the form a few times before the height on some of the tabs goes wonky.
And, it seems to be isolated to 2 of the 5 tabs. I set the minimum height to 5 on the top row (3 data cards) of one of the 2 problemeatic tabs and it snapped back to order. The other is fully extended and will not budge.
Is this a form with multiple columns?
Try setting the Height of all data cards to 5 and see if it solves the problem. If it does not, it could be a different bug than the one in the thread.
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Features releasing from October 2019 through March 2020