This was a known issue tdf#97191 <https://bugs.documentfoundation.org/show_bug.cgi?id=97191> introduced with support for emoji. The :10:, :11:, and :12: text sequence would convert to their Unicode clock-face glyph: U+1F559 CLOCK FACE TEN OCLOCK -- 🕙 U+1F55A CLOCK FACE ELEVEN OCLOCK -- 🕚 U+1F55B CLOCK FACE TWELVE OCLOCK -- 🕛 The autocorrect emoji entry sequence for the clock face entries has been changed for the 5.2.2, 5.3.0 builds but did not make the cut for the 5.1.6 release. But, simple to work around in 5.0 and 5.1 releases by removing the entries in the autocorrect table. Standard menu, Tools -> AutoCorrect -> AutoCorrect Options -> Replace tab Locate, highlight and delete the entries for :10:, :11: and :12: and OK out. -- View this message in context: http://nabble.documentfoundation.org/Can-t-enter-12-12-52-in-calc-cell-tp4199900p4199913.html Sent from the Users mailing list archive at Nabble.com. -- To unsubscribe e-mail to: users+unsubscribe@global.libreoffice.org Problems? http://www.libreoffice.org/get-help/mailing-lists/how-to-unsubscribe/ Posting guidelines + more: http://wiki.documentfoundation.org/Netiquette List archive: http://listarchives.libreoffice.org/global/users/ All messages sent to this list will be publicly archived and cannot be deleted