Find invisible until frame clicked

[sam-s4s]

I have started using (TChromium).Browser.Host.Find(), however there is a problem.

When I click my Find button (outside the Chromium frame), the find occurs on the page, however the text is not highlighted at all. The Find is invisible.

If I click on the Chromium frame/page BEFORE hitting the Find button, then it works fine, and is visible.

I have tried doing a SetFocus on the frame, but this seems to make no difference.

Am I doing something wrong, or is this a bug?