No advance width for repha breaked out of a cluster

[miloush]

Defect Report

Title

When mutiple rephas cause consonants to split out of a cluster, the RA glyph has zero advance width.

Font

NotoSerifGrantha-Regular.ttf

Where the font came from, and when

Noto website, 2023-12-19

Font Version

Noto Serif Grantha Regular 2.004; ttfautohint (v1.8.4.7-5d5b)

OS name and version

Windows 11 (26016.1000.amd64fre.rs_prerelease.231208-1532)

Application name and version

dwrite.dll 10.0.26016.1000 (WinBuild.160101.0800)

Character data

𑌕𑍍𑌰𑍍𑌰𑍍𑌰𑍍𑌰

Hex	Dec	Name	Range	C#	HTML	URL
U+11315	70421	GRANTHA LETTER KA	Grantha	\U00011315	𑌕	%F0%91%8C%95
U+1134D	70477	GRANTHA SIGN VIRAMA	Grantha	\U0001134d	𑍍	%F0%91%8D%8D
U+11330	70448	GRANTHA LETTER RA	Grantha	\U00011330	𑌰	%F0%91%8C%B0
U+1134D	70477	GRANTHA SIGN VIRAMA	Grantha	\U0001134d	𑍍	%F0%91%8D%8D
U+11330	70448	GRANTHA LETTER RA	Grantha	\U00011330	𑌰	%F0%91%8C%B0
U+1134D	70477	GRANTHA SIGN VIRAMA	Grantha	\U0001134d	𑍍	%F0%91%8D%8D
U+11330	70448	GRANTHA LETTER RA	Grantha	\U00011330	𑌰	%F0%91%8C%B0
U+1134D	70477	GRANTHA SIGN VIRAMA	Grantha	\U0001134d	𑍍	%F0%91%8D%8D
U+11330	70448	GRANTHA LETTER RA	Grantha	\U00011330	𑌰	%F0%91%8C%B0

Screenshot

(an example of font with better handling on the left)