This happens a lot when points are not extremes, which is usually bad. However, fixing this alert by adding points on extremes may do more harm than good, especially with italics, calligraphic-script, handwriting, rounded and other fonts. So it is common to ignore this message
I looked at each of these and didn't see any mistakes or things I could fix. I'm closing this, but feel free to open it if there is something I missed.
[('uni066C', 44.0572, -122.4099), ('uni066C', 75.6118, 35.3631), ('uni066C', 105.6638, 35.3631), ('uni066C', 67.3475, -122.4099), ('quotesinglbase', 121.2, 114.85), ('quotedblbase', 247.2, 108.85), ('quotedblleft', 273.14588, 727.1452), ('quotedblleft', 243.65775, 727.1452), ('quotedblleft', 140.14588, 727.1452), ('quotedblleft', 110.65775, 727.1452), ('quotedblright', 62.85412, 526.8548), ('quotedblright', 92.34225, 526.8548), ('quotedblright', 206.85412, 526.8548), ('quotedblright', 236.34225, 526.8548), ('quoteleft', 140.2, 726.85), ('quoteright', 62.8, 527.15), ('approxequal', 492.465, 329.0), ('approxequal', 492.465, 167.0)]
This happens a lot when points are not extremes, which is usually bad. However, fixing this alert by adding points on extremes may do more harm than good, especially with italics, calligraphic-script, handwriting, rounded and other fonts. So it is common to ignore this message