Shares in the owner of instant messaging app Snapchat fell by more than 31% at times in after-hours trading on Tuesday as Snap announced its fourth quarter and full year 2023 results. Snap missed analysts’ revenue expectations and shocked investors with a surprisingly high loss forecast for the current quarter. Fourth quarter revenue increased by 5% year-on-year to $1.36 billion. Analysts had expected an average of $1.38 billion. The bottom line was a loss of about $248 million in the quarter, following a loss of $288.5 million a year earlier. For the current quarter, Snap is forecasting reven…