demo
https://github.com/Alexey-T/ATSynEdit , in folder app/demo_editor. Before run, rename folder "test_files".
app shows empty edit (if shows not empty, rename "test_files"). Caret NOT blinkin. Not, because "if Focused" FALSE in TimerBlinkTick.
I called "ed.SetFocus" in FormShow, it cannot help.
Bug?