I have been burned by this more times than I can count.
All stories on my backlog view are not marked. I mark a single checkbox, expecting that single story to be selected for moving to another sprint, back to backlog, etc.
NOPE! Jira decides select 2 stories: that one plus the story I was viewing.
Can JIRA PLEASE allow me, the user, to decide which stories I wish to select instead of auto-assuming and adding the 1 story I happened to be viewing?
Did we forget all UI design patterns that have worked for 40 years? Have you ever taken a poll and asked to check a bunch of boxes and the UI checked one you DIDN'T select? Please either turn this off or give me an option to disable this "feature"