Hey there, here is my experience so far:
The multitrack enabler seems not to be included in T++ V2.
I started the game with T++V2 replacing the old mod and immediately got errors pointing towards broken assets (in this case all my subscribed train stations with more than two tracks were affected).
After subscribing to Multi-Track Station Enabler 1.1.0 (by DontCryJustDie - https://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=532863263) it all seems to work like before - shift key works again for selecting tracks.

On the other hand I still am missing the button for the road customizer. Nothing so far worked to make it reappear and I really need those lane changers and lane restrictions for vehicles.
Any suggestions?

引用自 psychobrahe：

Hey there, here is my experience so far:
The multitrack enabler seems not to be included in T++ V2.
I started the game with T++V2 replacing the old mod and immediately got errors pointing towards broken assets (in this case all my subscribed train stations with more than two tracks were affected).
After subscribing to Multi-Track Station Enabler 1.1.0 (by DontCryJustDie - https://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=532863263) it all seems to work like before - shift key works again for selecting tracks.

On the other hand I still am missing the button for the road customizer. Nothing so far worked to make it reappear and I really need those lane changers and lane restrictions for vehicles.
Any suggestions?

Yes i subscribed to that instead...

EuropeanBuildingsUnlocker prevented the toolbar button to appear in my environment. Do you have this or a similar mod active?

@Kromi75 - great suggestion, thanks!
I deactivated EU Buildings Unlocker and the customizer button was there again.
Now I just need to figure out whether I still need the unlocker mod at all.