Have just tested the justified gallery on a completely fresh localhost site with no plugins and default 2020 theme, the problem persists. Seems like an internal plugin issue. The last row images should be justified to an average height
@phillcoxon, with ‘-1’ value all the other images but the last one do not show up for me. I have set the value to 200%.
Cleared all the possible cache I could get to, did not help with the issue.