Arabic Letter E, Final Form

No. It is the final form of Uyghur ې.

In Uyghur written in Arabic script, the base letter ې represents the vowel e. Arabic-script letters usually join and change shape with their position; ordinary text stores the base letter, and text shaping chooses its displayed form. ﯥ is the Arabic presentation form for the final position: a compatibility character that stores the shape, not a second spelling.

Uyghur writing is attested at least from the 6th century CE, before Uyghur adopted an Arabic-derived script. Chaghatai was a later literary language written in an Arabic-derived script. Modern Uyghur Arabic orthography took shape around 1920, adapting the script so Uyghur vowels such as e could be written explicitly. The base letter ې is also documented in Arabic-script writing for Kazakh, Kyrgyz, and Chaghatai.

How do I type Uyghur E?

Type ې for ordinary Uyghur text.

Use a Uyghur input method to enter the base letter ې. The shaping system uses neighboring letters to display its joining form, which can look like ﯥ without storing U+FBE5.

Enter U+FBE5 directly only when a legacy file, glyph test, or other technical task specifically requires this pre-shaped form.

Why can ﯥ show as a box?

Some fonts lack the explicit glyph ﯥ.

Arabic text normally gets its joining forms through contextual shaping. A font may render ې correctly in ordinary Uyghur text yet lack a glyph for ﯥ, so this character can appear missing or as a box.