Quality Assurance Projects - Sudoku Solver - Bug in the example?

Tell us what’s happening:
At the beginning of each project, and example of a successfully-completed project is given. The Sudoku Solver example is here: https://sudoku-solver.freecodecamp.rocks/

However, when trying to see how it responds to various types of invalid input, I noticed that it will provide a “solution” to the following input, which should result in an error:

.99..5.1.85.4....2432......1...69.83.9.....6.62.71...9......1945....4.37.4.3..6..

It ends up with a solution that has two 9s in the top row, two 9s in the top-left 3x3 grid, and two 9s in the second column.

Is this a bug that should be reported somewhere? If so, where and how should it be reported?

Your code so far

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Challenge: Quality Assurance Projects - Sudoku Solver

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Thank you for helping make FCC better. Bugs can be reported as GitHub Issues. Whenever reporting a bug, please check first that there isn’t already an issue for it and provide as much detail as possible.