When choose a tool , such as circle,and annotate on the page , then unchoose the tool (only unchoose can trigger this bug),then click the trash (or undo button and redo button), the annotations will be cleared , while when you click any tool again , the annotions you have cleared will show again.
When choose a tool , such as circle,and annotate on the page , then unchoose the tool (only unchoose can trigger this bug),then click the trash (or undo button and redo button), the annotations will be cleared , while when you click any tool again , the annotions you have cleared will show again.