The "Suggested Edits" flag up in the top right corner does not auto-update when the page's content changes.
Say you review the suggested edits; although the current page may say that no suggested edits remain, the flag in the top right corner still remains.
The following Meta question from 2012 addresses this question:
And according to the selected answer, the flag should update as you approve or reject edits:
[...] we've made the suggested edit count live again while you're actively working through the Suggested Edits review queue. That is, you should see an updated and accurate suggested edit count after approving or rejecting a suggested edit.
However, the flag does not update, so either this feature was reverted, or there is a bug preventing the suggested edit count from updating.