The new software has a few teething troubles.
teething troubles
idiomProblems that are to be expected with any new and untried product, system, or venture.
Origin
disputed originA reference to teething (“the eruption, through the gums, of the milk teeth”) and the accompanying discomfort, which occur during early life.
We expected some teething troubles when we launched the new website, but the team fixed them quickly.
Although the startup faced significant teething troubles during its initial rollout, the founders remained confident that the system would stabilize once the minor technical glitches were resolved.