As seen in the video linked, after using Combination Blow for a while it suddenly stops working properly, and charged melee's no longer give Gambler's Dodge back. I had previously thought that mods that gave other abilities energy when using my Class Ability was the source of the problem, but I tested without having any mods that would give abilities back and the problem still persisted. I believe this bug has been around since the launch of Beyond Light, but as I was using Stasis for the past weeks I forgot about it until I recently started using Arc Hunter again.