Why have prompts on previous lines in the clj command-line REPL started disappearing?

Thu, 07 Jan 2021 15:19:29 +0000

After pressing the Return key to submit an expression to the REPL, the prompt on that line has started disappearing:

In the above example, after Return was pressed, the first line after the Clojure version number should still show:

user=> 123

but it is instead only showing:

123

i.e. the prompt disappears.

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