This was another Roko’s Basilisk of mine. Distinguishing between different kanji and same kanji written in different styles… Like, 
and 
In the first one the “fins” radical is used, in the second one – the “legs” radical. Yet the kanji is the same – just different styles.
On the other hand, in 
and 
the same difference leads to them being two completely different kanji…
However, again, once I accepted that I’ll just have to memorize these things – it became much easier 