G3 kerning indicators (blue and yellow stripes) showing only at 150pt zoom

kerning indicators show up ONLY if I look at my font at 150pt. Bigger or smaller zoom makes them disappear :confused:
At the same time, I feel the little crosses indicating sidebearings are too prominent.
Ideally, I would love to see only kerning coloured stripes, without these crosses at all.

Found a pattern. Kern colours are shown only on the 1st line of text. On all other lines, it doesnโ€™t

Found the problem and fixed it.