[Lazarus] ATSynEdit gives OnKeyDown twice per each key

AlexeyT aaa5500 at ya.ru
Tue Aug 28 20:14:37 CEST 2018

Strange issue on Linux gtk2. (OK on Win32).

In simple demo of ATSynEdit, I get 2 calls of OnKeyDown per each typed 
letter, e.g. "d". Why is it so? ATSynEdit just uses TWinControl's OnKeyDown,


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