Only a single low tone on all-caps sequence

[NotUnlikeTheWaves]

Hello, with the following sequence I get only a single low tone emitted: 2.B 4#F 2.#G 4#F

However, when I remove the caps it does run fine: 2.b 4#f 2.#g 4#f

I have tried making only the 2.b lowercase and the rest upper-case, in which case only the 2.b plays and nothing else