Y Constraint missing in Vertical StackView

Question

I have a UITableViewCell that has an embedded UIStackView in it. Everything works and looks fine on the phone and iPad. However, I get a lot of weird errors in the StoryBoard and I don't know if I can ignore them or not. Typically, I hate ignoring warnings. But is it OK in this case? My Table Cell is set up as follows:

UITableViewCell
 - Content View
 -- View (named outerView)
 --- View (named dateView for top banner color)
 --- UIStackView (vertical, named mainStackView, pinned to neighbors)
 ---- UIButton (A)
 ---- UIView (B)
 ---- UIStackView (C, horizontal)
 ---- UIStackView (D, horizontal)
 ---- UILabel (E)
 ---- UIButton (F)

Everything under the mainStackView (letters A-F) are all showing an error in StoryBoard that they "Need constraint for: Y position or height". However, per the Apple documentation it says they will handle all the constraints and vertical alignment if the UIStackView is vertical orientation. Like I said, it works fine and the arrangedSubviews can be collapsed/hidden and there are no other warnings. I just don't like shipping out code riddled with warnings. What can I do to fix this, or is it a known issue?

UPDATE: Here is the MCVE as requested by the comment below. Click here and unzip the folder to get the bare bones project that will only work in Interface Builder.

Answer 1

I also had similar problem with the vertical stack view. The way i solved it by giving height constraint to any subview(in my case horizontal stack view) and removing it at build time. I also tried this on your MCVE and it worked.

Note: This is certainly a hack but it resolved the problem.

Answer 2

The way I solved this was to either:

1. Remove the bottom constraint on the main stack view to the bottom of the SuperView so only 3 sides were pinned.

or

2. Adjust the row height of the table cell. Although it is a dynamic height cell based on label/button heights, I guess it still needs to be the "correct" height in interface builder?

I had to use option 2 because if I did option 1, my table cell disappeared as it did not know how the height to use for the cell.

Also worth reiterating that the code as before still worked fine, it just had compilation warnings. I have no idea why nobody else could see them despite being on the same level Xcode. Now off to try and get my 3 days back and work on my OCD about warnings in code.