Some contextual alternate glyphs from OpenTypeSVG color font are "cut off"

Summary:

I made color OpenTypeSVG font NesathoBeryl. I'm happy, I can test it now in Inkscape. Unfortunately, some glyphs from contextual alternates are "cut off" from left side. For example:

• contextual alternate "S" after "A" is cut off
• contextual alternate "S" after "L" is cut off
• contextual alternate "S" before "T" is ok
• contextual alternate "S" before "Y" is ok

Steps to reproduce:

• install OpenTypeSVG color font from https://www.glukfonts.pl/font.php?font=NesathoBeryl
• open Inkscape
• create new text
• type "AS LS"
• choose NesathoBeryl as font

What happened?

contextual alternate "S" after "A" and after "L" is "cut off" on left side ...

What should have happened?

...

Sample attachments:

Version info

tested on 1.0, 1.2 and today Inkscape 1.3-dev (131a0986, 2022-10-18)