JIRA's Search is far worse than the regular JIRA hotkeys. The Enter key will incorrectly tab-complete JQL just before executing the search. Meanwhile, the Tab key doesn't tab-complete and instead focuses the Search button (which lets you execute the uncorrupted JQL). You have to actively train yourself out of how everything else works just to avoid going insane. Well, that or use the mouse just to click Search (eww).
Every ticket tracking system sucks. Trello was the closest thing to joy.