Almost purchased, but buggy

I wanted to purchase the full version but then noticed the terribly inconsistent behaviour in joining elements with an arrow to depict flow. A very basic requirement but very very frustrating in this app. You might get a proper arrow from one object connected to another in 1/20 attempts. Thats unfortunate.

WineYum about Grafio Lite 3 - Diagrams & Ideas, v3.0.1