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This is just wrong. All serious issues that turned out to be safety concerns were in Russian modules. The 2018 leak you refer to here was in a Soyuz capsule and the 2021 leaks were in the Zvezda module (same place they are this time). In between there were also minor leaks in the Zvezda connection tunnel.
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If you count the Soyuz leak, then the Boeing counts too! That was far more serious than anything you listed.

Two astronauts stranded for nine months taking the ISIS supplies intended for others. This is after they safely docked, which was considered risky at the time.

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You brought it up. I have been talking about structural issues with long term core modules. And that is clearly a Russian issue.
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The Boeing mission was scrubbed out of an abundance of caution. IIRC, nothing bad actually happened.
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Maybe we can use the goop from those self sealing bike tires to have self sealing space station modules
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