Under the hood
Plugin UI panes now track which ones you've already been asked about, and use terminal width to decide when to ask again.
What
The internal store that manages plugin UI panes (custom panels a plugin can display) now tracks which panes you've already been "asked" about on a per-plugin basis, and closes all of a plugin's open panes when that plugin is removed. Whether opening a pane needs to ask you first now depends on the terminal's column width, compared against one threshold for panes you've already been asked about and a different, separate threshold for panes you haven't.
Why
This should reduce repeated prompts for panes you've already approved, while still asking before opening a new pane if the terminal is too narrow to show it well.