Users with German locale are not able to find entries with number, which contains two dots in it - e.g. "82.3189.37" (actually, Latvian locale does the same trick). When users with English locale are searching for the same number, they are able to find the corresponding entry.
I assume, that it is because dots are used to separate thousands in German language - e.g. 1.000.500,50 Eur.
There could be a workaround for users with German locale, but it doesn't work for users with English locale (see table below).
- 82.3189.37 - German: no results - English: one entry found
- 82.3189* - German: one entry found - English: no results
- 82.3189.* - German: one entry found - English: no results
- 82.3189 37 - German: one entry found - English: no results
One more possible workaround could be to set English for "My Content and Search Languages" of "Language and Region" settings in user profiles, but maybe there is a better solution?
Best regards, Aleks