Hi Cemortan_Tudor, I think you're maybe not targeting the point that you need?

If you start a construction line here:


And end it here:


Then you will have 4 "end" snap points available. Those 2 above where and an additional one here:


And another one here:


For what you want, you want to target these 2:


You do not want to target these 2:


There will also be a "Mid" snap available here, you don't want this one either for this particular use.


- Michael