Ubuntu Preference Number Format - Crashing

I downloaded the Desktop Version in Ubuntu 64-bit , today… To change the number format, when I clicked on the Number format link, the Application crashed.

Please help to resolve this …

I want to add that all the Other features in the Preference , like Date Format, Language and Application Data is only. On clicking the Number Format, the Application Crashes.
Ubuntu Version was downloaded Today : 18.4.30