Ctrl+right.arrow behaviour in Linux

Question

Is there a way to change the behaviour of Ctrl+right.arrow in Paratext for Linux? Currently it goes to the end of a word, whereas I’d like it to go to the beginning. There’s a toggle in Firefox about:config that changes this behaviour there:
layout.word_select.eat_space_to_next_word
but that also changes double-click selection to include a following space–NOT what I’m after!

Any help appreciated,

Paul