Welcome to the world of software forges 
That is one particular issue and there are at least 4 more; here is one Net ties, star routing and decoupling capacitors as first-level tool (lp:#1571930) (#2018) 路 Issue 路 kicad/code/kicad
The discussions associated with making net-ties 1st class citizens (to improve their usage, to make them more flexible) is a protracted discussion because it relies on other capabilities to be implemented
Net tie on internal layer - Layout - KiCad.info Forums. I am one of many that would <3 a more robust/flexible solution but it takes time, the complex pad stackup is a step in the right direction