Airtours

Just recently flown a domestic leg from MAN(EGCC) to LHR(EGLL). The second time around, after the first freezing issue; i was able to enter all the Simbrief data accurately. When I entered the SID for 23R at Manchester and before insert the path looks accurate but then when i hit Insert the SID jumped to the opposite side as though i was flying out off 05L. I had to Fly manually to 1500agl and select Direct to, to the next wpt. Is this an isolated issue at Manchester or has anyone else seent his with other airports?