Text was entered and seemed fine, some 13K words over all. Then the whole document started to blink at about a once every 2 seconds rate. I tried deleting text from the end back towards the start of the document but removing eventually all the text and reentering some test text showed that the issue persists.
Hi
Unchek Format
▸Character
▸Font Effects
tab▸Blinking
This parameter can also be defined in styles: e.g. Right Click
the text▸Edit Paragraph style
▸Font Effects
tab▸Blinking
Regards
It’s a bug that has existed since 2015.