I'm sorry to hear you both are having this issue.
First of all, please make sure you have third-party cookies enabled, as sometimes this can cause issues with the Dashboard options:
If you do, please try logging out of WordPress.com, clear your browser cache and WordPress.com cookies, and then log back in:
If those things don't help, it would be useful for troubleshooting to have a screenshot for exactly what the widgets look like when they are causing problems (spiritofmandy, your link didn't work for me). Specifically, could you please capture this issue:
When I click on the widget section, I receive a list of the widgets available with long sections after them.
To take a screenshot:
You can upload the screenshot to your media library and I can see it there.