Ok, so what exactly do you do from the save point on, to achieve the glitch? I tested your save file, and the only things that didn't show right were the knitting lady and the doorway.
The glitch generates some random results and knitting lady's clothes are coloured wrong. The first time I loaded the save, she was wearing all white, later, after I went in and out of the building, she was wearing all black, and when I loaded the save once more, she was yellowy brown.
To test this, I was using the 1.0.0.0.rc1 version of ScummVM, but it's important to note I used the PlayStation version of Broken Sword.
There is definitely something wrong here, so you might want to describe the glitch in detail [what actions are needed for it to appear, what locations, what to look for, etc.] and submit a bug report.