PyCharm shows wrong project layout after update

Question

Today after an update to PyCharm 2021.2.2 I found that some projects in my workspace were messed up, for example I see this:

Instead of this, that I was seeing before PyCharm update:

Is there any way to fix this?

Answer 1

(Answering my own question so as to save time for users facing the same issue.)

EDIT: found a more stable and faster solution.

In PyCharm > Settings > Project Structure, select the project and remove the useless "Content Roots" at the right on the screen.

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Old solution for reference:

• Close PyCharm.
• Open the faulty project's <root>/.idea/<project>.iml and remove all XML entries that refer to content outside the project:

• Save the file and reopen PyCharm. The project displays normally again.

Answer 2

For me helped following:

• Close PyCharm
• (Optional) I've also removed the project from my "Recent Projects List"
• Remove .idea folder from project root
• Open the project and wait for indexing process