Latin small letter i with caron (U+01D0, ǐ) has a misplaced dot inside the caron

_Possibly a duplicate of https://github.com/googlefonts/roboto-flex/issues/427_

A user wrote in,

>> we've been using Roboto Light Italic as the typeface for Pinyin, which allows individuals who can't read Chinese to be able to pronounce the Chinese characters.
>>
>> However, over the years, someone within our organisation has noticed that some of the Pinyin looked strange and weird whilst the rest of the Pinyin looked perfectly fine.
>>
>> In this screenshot below, using a software application called ProPresenter, the glyphs have been set to Roboto Light Italic. However, some of the glyphs are not italicised at all and remain bold.
>>
>> These glyphs are the vowels in Pinyin, (a, e, i, o and u).
>>
>> Is it possible for you folks to have Roboto Light Italic support the following glyphs? `ǎ ǐ ǒ ǔ`

I replied,

> Roboto is no longer maintained actively, the glyph set will not change. Our latest versions are Roboto Flex, which has a smaller glyph set, and Noto Sans, which has a larger glyph set; it seems both support these characters, although RF has a bug? If you confirm its buggy, we may be able to fix it there.
>
> https://fonts.google.com/specimen/Roboto+Flex?preview.text=%C7%8E%20%C7%90%20%C7%92%20%C7%94
>
> https://fonts.google.com/noto/specimen/Noto+Sans?preview.text=%C7%8E%20%C7%90%20%C7%92%20%C7%94

And they confirmed the`ǐ` is broken: