Thank you so much for sharing your question with our community.
I appreciate the screenshot you provided for added reference. It does sound as though an app may be making the stock changes, however, to be absolutely sure we can take a deeper dive into your store's logs.
Since this is a public space we cannot access your account here, which is why I invite you to connect with our 24/7 Support team for specialized assistance. For faster assistance, feel free to link this thread to our agents when you connect with us.
Olivia | Social Care @ Shopify
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