I book marked yahoo page after searching with the keyword "blue".

So when I click on my bookmark it will not load main page of yahoo but
load the search results of blue on yahoo.

Then I would see " l " this. on the search bar of yahoo.

This means I'm ready to type in my keyword.

So I type then " l " this blinking would go away.

Pressing anything on keyboard is not gonna work. The previous " l " blink
was a fake or I don't know.

Even if I click the search bar right away and type in a keyword,
it wouldn't work.

I'd have to wait for 5-10 seconds and I have no idea to know when
it is ready to type in.

This usually happens right after turning on the firefox then clicking this
bookmark. and also after turning on the firefox for a long period of time.