The weak cursor position seems not correct for some Sinhala letters
The Sinhala language is LTR language, but the strong and weak cursor pos is different for some characters.
When the cursor is at the end of the string of "අකුරු" or "අයුරු", both strong and weak cursor will be displayed.
Downstream Bug: https://bugzilla.redhat.com/show_bug.cgi?id=2131516