I have a problem when editing online data (for example facts) and entering polish letters in an edit box. For example pressing "ALT s", which is the way to get letter "ś" displays in the edit box "Ĺ›". After saving and viewing the fact it still shows "Ĺ›". The same for other polish letters. Data that has been imported from GEDCOM file shows correct diacrictics.
Thanks for letting me know that copy/paste works and for the clarification regarding which browser you are using. This information will help us research the problem.