Just started seeing this issue a couple days ago.

Seems very consistent though. When I click on a text field and my keyboard pops up on my screen, it only stays up about 3-4 seconds before it minimizes on its own.

Once I bring it back up it stays up, but it's incredibly annoying and I keep hitting stuff I don't intend to click due to this.

Have not seen this happen on any other site or app.

Not sure if anything changed since yesterday? I was seeing it consistently yesterday but no longer happening as of this morning.