The correction of the Phaser block bugs actually created a bug with the breaking blocks. When falling through a vertically aligned column of breaking blocks, you're sometimes teleported in a strange manner and it often results in a deep fall into the abyss. However, at the moment this bug could be evaded by pressing left or right during the fall through the breaking blocks.
Alpha 0.04b with more bugfixes should be released in the upcoming days. Sorry for releasing versions, which are not tested enough, but keep in mind that Cubo is in an alpha state of development.