In Fill in the Blanks if an apostrophe is part of the answer the content does not recognize it if used in iOS devices.
Test content: https://h5p.org/node/647096
Issue tested using the following environments:
iPad iOS 12.4.3 Safari 12 and Chrome 78iPad iOS 12.9 Safari 11iPad iOS 12.9 Safari 12iPhone 11 iOS 12
Fix proposed in
Better fix proposed in