What I have found in using VO mode is that the Add Bookmark and Filter buttons are apparently being interpreted as being a single item, and double-tapping on them does nothing.
From a user:
Using the voiceover screen reader on an iPhone, I cannot add a bus stop as a bookmark. The button does not activate when I double tap on it which is the standard gesture to activate a button.
What I have found in using VO mode is that the Add Bookmark and Filter buttons are apparently being interpreted as being a single item, and double-tapping on them does nothing.
From a user: