Utopia Sprawl, Brave the Wilds, and bargain
During my last premier Eldraine draft, I've run into a recurring issue. After tapping a land enchanted with Utopia Sprawl manually so that I can then use the mana to cast Brave the Wilds using the Utopia Sprawl as bargain fodder, I found myself unable to see or select the Utopia Sprawl enchanting my land. The left and right arrows that show up on mobile that you tap to show attached auras etc. are there. But the permanent is not visible. And if I managed to tap the arrows they disappeared until the area is tapped again, but the aura is still not visible. So Utopia Sprawl can't be selected for use in bargaining while casting Brave the Wilds.
I should note that this issue is occurring on Android on a Galaxy S10+. I managed to recreate the issue while playing against the AI Sparky. I've attached two screenshots: one before trying to tap the left and right arrows to show attached permanents and one after the arrows disappear. Notably the issue was not occurring until the boardstate was full of permanents. I had to play out quite a few lands before it showed up again. I have not tried to recreate the issue with any other land auras or any other spells with bargain.
Unfortunately the in game timer doesn't acknowledge that you're trying to navigate around this issue. I've had three games now where the timer ran out while trying to resolve Brave the Wilds so I passed through the main phase with unspent mana in my pool and without the needed creature. And two of those games were close enough that being set back in those turns might have cost me the win. Hopefully I can prevent future frustration by reporting it now. Thanks!