Windows Insider build 18945: Text cursor randomly appears in places where it shouldn't

Enabled text cursor and chose a custom color for it. now just randomly on some apps like Mail or Google chrome etc, the text cursor appears. sometime it's big like a vertical thin line and sometimes it's small in its normal size. I will post screenshots as soon as possible. my GPU is Intel 630 inside a 7700K. graphic driver installed and is latest version.

The image below is a cropped screenshot showing a part of my desktop and you can see the text cursor with its custom color shows up in a very odd place. though usually with a few random mouse movements it disappears.

The Image below is a screenshot taken when browsing this same post inside Google Chrome Canary. and you can see that weird text cursor.