krzysztof,
We’ve traced this issue back to some bugs with how the encoding works. While we will work on delivering an appropriate fix in an upcoming release, you can use the workaround below for now.
Go to Preferences > General > Workspace and change the Text file encoding
setting to Other: UTF-8
. Click Apply and Close
, and restart the IDE to ensure the change is uniformly applied. Do let us know if this works for you.