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I tried it with emacs -Q on version 26.3 and it works for me: it moves the cursor for a second to the matching opening brace if that is visible and it prints the matching line in the echo area if it is not.
Check the value of post-self-insert-hook with C-h v post-self-insert-hook RET - my setting is:
(electric-indent-post-self-insert-function blink-paren-...
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