(More easily noticeable when using one Riptide and one non-Riptide Trident) Hold a Trident with another Trident in the hotbar slot next to it. Charge the first Trident and swap to the other before letting go. Release the button and the first Trident will fire.
Hi Kieran, thanks for your report! However, this issue has already been reported here: MC-157834
Please attach any further information regarding this issue to the linked report.