Product and version
FileMaker Go_iPad 188.8.131.52
OS and version
iPad 6th generation 2018
I am noticing a subtle flicker on card windows when there is a Header part present on the card window. The exit animation tends to studder towards the end and can cause some flicker. The flicker is more noticeable when the layout in the background has more contrast with the colors of the card window. This seems to be caused by the Header part quickly collapsing before the card window fully fades out. You can see this as the Body part quickly shifts upward to fill the empty space. When using only a Body part on the card window, the Body does not collapse, and instead fades smoothly.
Note this issue may also be present if using other layout parts such as Top Navigation on the card window, but I have not tested with those.
How to replicate
Add a Header part to a card window and compare the exit fade transition with a card window that has no Header part. Please see attached video closely for example. The Header part should not collapse abruptly because this will cause a stutter or flicker on the exit animation which can be noticeable with enough contrast.
Workaround (if any)
Do not use a Header part on the card window. This is not always ideal.