Kernel won't print in vscode jupyter, seemingly at random

[theloni-monk]

The following code executed in a cell

print("test")
flush(stdout)
false

produces the output:
false

I've tried and succeeded and failed to reproduce this error several times and it seems to just happen sometimes that vscode won't print the output of stdout other than the final statement evaluated. I have no idea why.

[theloni-monk]

It seems to occur after I've printed a bunch of stuff previously. Maybe theres a buffer somewhere that gets too full?