Description

The variation between how the numeric value differs the decimal place between a comma and a dot depends on the Language Pack selected at the Default Language configuration at the System Administration page of Jira. However, there is an issue when using number that end with a whole number at the decimal units, Jira eats the 0 (zero).

Example in English language
User input: 7.90
After saving: 7.9

User input: 7.92
After saving: 7.92

Example in Portuguese language
User input: 104846,40
After saving: 104.846,4

User input: 104846,43
After saving: 104.846,43

As per this article on Significant Zeroes:

Zeroes placed after other digits but behind a decimal point are significant; 7.90 has three significant digits.

From my perspective, Jira shouldn't be "eating" the decimal 0 (zero) on whole numbers and that cause issues to customers from other countries that use Languages where it is important to have the whole decimal number displayed.

Workaround

There is no current known workaround to be applied on this situation. If you find one, please leave a comment with the steps to achieve it.