Strange behavior when creating dependencies in component diagram (#481)

I'm trying to add a dependency arrow between two components. I click "dependency" in the menu, then I click on component A, keep the mouse button pressed, move the cursor over component B, then release the cursor.

Expected behavior: a new dependency arrow from A to B.

Actual behavior: start and end of the arrow seem to be kind of "random" (I can't figure out the system behind it). Sometimes I get an arrow from A to A, sometimes the start of the arrow is another dependency error, sometimes it's even working as expected.

I think that the behavior might be dependent on if the part of the component where I press / release the mouse button has text / a label. It seems to be working if I only target areas of my components that don't have any text. However, the error also occurs when I target border areas of the components.