Why did the inside pane crack without any impact from a baseball or bird?
For most homeowners: and ask for “insulated glass unit replacement – inner pane cracked.” Give them the window’s dimensions (you can measure while still installed) and a photo. They’ll order the IGU and install it in 20–30 minutes onsite. double pane window cracked on inside
Even if you "patched" the crack, you would likely see inside the window within weeks because the desiccant (the moisture-absorbing material in the spacer bar) will quickly become saturated. Why did the inside pane crack without any