Not really answering your question but you might have more luck with Kitty. Like...

		petepete on April 2, 2021 \| parent \| context \| favorite \| on: Tmux lets you select and copy text with your keybo... Not really answering your question but you might have more luck with Kitty. Like Alacrity it's very fast but Kitty has a more features. https://sw.kovidgoyal.net/kitty/