Describe the bug

Customizable padding feature added by #352 makes the status bar break when using zero-width space as a padding.

To Reproduce

1. Add following lines to .tmux.conf, which are from feat/making plugin padding customizable #352

set -g @dracula-left-pad '​'  # THERE IS A ZERO WIDTH SPACE HERE
set -g @dracula-right-pad '​'  # USING '' WITHOUT A PADDING CHARACTER WON'T WORK

Note that this is not a empty string. There is a U+200B ZERO WIDTH SPACE between the quotes.

2. tmux kill-server && tmux

Expected behavior

Plugins without paddings to be appeared.

Screenshots

Status bar is stacked every time it's refreshed. It seems like that the last amount of used ZWSP characters are wrapped to the next line.

System

• OS: macOS 26.1
• Tmux Version: 3.6a