I’m sorry to hear this, Susan!
I don’t have any such behavior on my own site, and so I’m wondering if you can test something on your site to reveal—or rule out—the presence of conflicts on your site.
Basically, deactivate ALL plugins on your site other than JUST these two plugins:
• The Events Calendar
• Events Calendar Pro
(So, even deactivate other The Events Calendar add-ons you have. ONLY The Events Calendar and Events Calendar Pro should be active).
Then, activate a default theme like the Twenty Sixteen theme on your site.
1. When your site is in this specific state, do your issues persist?
2. If issues persist in this state, then can you head to Settings → Permalinks in your site’s wp-admin and confirm what the setting is here? If it /%postname%/, for example?
3. If your site’s permalinks settings are NOT something like /%postname%/, then what if you set them to /%postname%/ and click “Save Changes”—if you then test your list view “jumping” issue, does any of the behavior change?
These three steps are a comprehensive test that will reveal much about the nature of these issues.
Let me know what you find!
Thank you,
George