The h5dump is a rounding error that only happens with VS2019 builds after a certain version. I have not had a chance to investigate because it will always pass if I compare to a file with those values. So, higher priority issues get the attention.
Interesting that h5clear has issues, might be that the correct files are not deleted before rerunning tests. The other possibility is that there are test framework issues with files being created out of order (original author of tests developed with autotools on linux and the test script assumes a linear test order).
In summary, these are issues with the testing framework and not the library or tools (determined after investigation).