It is not necessarily a likely occurrence for your total tax to rise disproportionately due to an increase in wages. However, you have to be sure you are looking at the change in your total tax and not necessarily the change in your balance due.
If you are basing your statements on a change in the balance due versus a change in the total tax (Form 1040 line 24), then the difference may be attributed to tax withholdings from your wages not keeping up with the increase in your wages.
You initially mentioned that you did lose the education credit that was claimed on your 2020 return. There could be other credits that also changed or were reduced with the increase in income. Other than the items mentioned, nothing else specific comes to mind that could affect your return the way you described. Just be sure to compare the total tax amounts instead of the balance due amounts to see the real change in the taxes.
@Murph88
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