Hi @Nathaniel Ibarra ,
I have done a test in my SharePoint online and I cannot reproduce your issue.
There is a another solution solve your issue.
Click All Items-->Edit current view.
Then scroll down to "Filter“,Set up as shown.
Then user only can see the item created by himself.
Thanks, Yanli Jiang
If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.