In this comment:
an unexpected numeric localisation issue was reported in which VStar showed a period in a user interface dialog as 0,0594 rather than 0.0594.
VStar is showing a comma because it (well, Java) has determined that the locale of the system on which it is running is not English.
To make sure I understand the problem, Velimir are you saying that although VStar shows commas in the phase plot dialog, it doesn't generate a correct phase plot if you click OK?
Do others, especially anyone in the locale Velimir has set, see this problem?
Is the locale of the system in question set to something other than English? If so, and if other tools don't show this, it may be because they don't look at the locale set by the user.
My experience from talking with VStar users is that this is all complicated by the fact that some people in non-English (by default) locales actually don't want to see anything other than decimal places, while others do. For example, I have had conversations with two people from the same country, one of whom wants the locale to be respected, while the other doesn't, so it's hard to know. I suppose I could add an option to ignore this or just turn it off completely. Most observation sources use decimal places also.