.SRT File Import Problem on Premiere Pro CC 2017 1.2
It's a Premiere bug. Try Subtitle Edit 3.5.5, which is free, insert the .srt, export as EBU STL file (25 fps works fine, it's time coded not frame coded).  

Import to Premiere, interpret as open Captions, set the adequate resolution and..way you go. For problems with position of the titles and rows, play with 9 position squares in matrix (3 X 3), it will correct the position of both rows.