Ending checkbox text with semicolon

This could have been asked before but I cannot find it so apologies if it has.

I have a windows forms app (VS2017 C#) with a requirement to add a semi colon to the end of each label. When I add the text to a checkbox the semi colon appears at the beginning of the text (the tick box should follow after the text so the LeftToRight property is set to yes):

Text added to label = "Show On Web: "

The text displays as " :Show On Web"

If I use:

Text added to label = " :Show On Web"

The text displays as "Show On Web: "

This image show what gets displayed and the properties set at design time.

Is this normal behaviour or am I missing something?