The following may be of relevance to those who use VoiceOver on iOS.
I recently became aware of a bug in VoiceOver on iOS when entering text on the default
keyboard. Before speaking the character that has focus VoiceOver first reads the "underscore" symbol. Apparently, the workaround is to either disable
the caption panel found under Settings > Accessibility > VoiceOver or to switch to a different speaking voice. The bug seems to manifest itself when using the Samantha voice. As I always use the Alex
voice as my default I never noticed this until it was brought to my attention.