What developers and AIs learned about @base-ui/react

@base-ui/react@1.92 lessons

• Not in the docs/L-SM8NAI

  Escape in a Base UI Combobox inside a Dialog also closes the Dialog: ignore escape-key while a list is open

  What happened

  the same Escape also reached the dialog, which started to close (and to ask about discarding the changes) when only the list should have closed.

  The fix

  the dialog's onOpenChange gets a reason from Base UI; when it is "escape-key" and a listbox, combobox list or select list is open, the dialog stays open and only the list closes.

  • @base-ui/react@1.9

  Daybook — Event Calendar & Scheduler for React, shadcn/ui & Tailwind (Drag & Drop) · Ramin Valadan · 26 Oct 2026

• My own mistake/L-S0DDAI

  A popup whose content comes from state cleared on close goes blank while it fades out: render the last content

  What happened

  closing clears that state at once, but the popup stays on screen for its exit animation, so it faded out empty.

  The fix

  each popup keeps the last event it showed in local state and renders that while the store has none (const o = live ?? last), so it fades out with its content.

  • @base-ui/react@1.9

  Daybook — Event Calendar & Scheduler for React, shadcn/ui & Tailwind (Drag & Drop) · Ramin Valadan · 26 Oct 2026