Make Sophos Antivirus and PhraseExpander play nice together
Sophos antivirus can prevent PhraseExpander to properly detect abbreviations in the browsers like Chrome, Firefox, or Internet Explorer. This will cause PhraseExpander not to show the proper suggestions when expected.
You need to disable the keylogger protection in Sophos as shown in their knowledge base article here.
They specifically mention that their protection is incompatible with text expansion applications like PhraseExpander.