I just hit level three last night (woo!) and have been introduced to the vocabulary word ビー玉. Typically WK uses hiragana for all of the readings, but for this one, instead of びいだま, the only reading accepted is びーだま, using a katakana long vowel marker.
First of all, is this typical? I’ve never seen a long vowel denoted that way in hiragana.
Secondly, is there an easier way to type this than having to switch to the Japanese keyboard on my phone (or copying and pasting from a katakana chart on PC)? I feel like that’s sort of a hassle.
Thanks in advance!