One thing that could cause issues is the rising cost of paying back Dollar denominated debts. Like if I was a Japanese company that issued bonds denominated in Dollars. I have to use Yen* to buy those Dollars to pay it back. Now it takes many more Yen to buy a Dollar so the cost of servicing the bond has risen even though the principal amount remains the same.
* I just assume Yen is being used, it's not strictly required, you can use anything to acquire the Dollars, but the cost of acquiring them is rising.