When I try and use the Fishing Rod using my offhand/left hand, the rod gets used but it just disappears after about 1 second. i tried use the main hand/right hand it works. I don't know if this is intentional or a bug...
MC-99105
Fishing Rod Bug with offhand
Resolved
Duplicate
0
Secret :)
(Unassigned)
Unconfirmed
Minecraft 1.9
Retrieved
Thank you for your report.
However, your ticket has been resolved as a duplicate.
This issue has been linked to the original bugreport: MC-83185. You can find or add further information on that report.
If you haven't, please search before reporting any bugs, as it's likely that one exists already.