strange problem with this forum

I am using a Chromebook rather than a computer these days. Tired of virus problems, and the way a computer slows down over time.

Often, when I load a page on this forum, oddly, the bar that is supposed to be to the far right of the screen doesn't appear. You use that bar to scroll up and down. When the bar doesn't appear I can't scroll up and down. Using the arrow down key won't work either. I have to reload the page, sometimes up to 3-4 times till the bar appears.

Any ideas?

Thanks for any comments.