When I insert a date by pressing CTRL+C then period then enter I get "<2019-02-28 ¶g¥|>".

I'm not sure what the strange character is (¶g¥|), can someone help?

GNU Emacs 26.1 (build 1, x86_64-w64-mingw32)
of 2018-05-30 built on CIRROCUMULUS
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