I think they did. Even if they didn't, the last time a sukuk bond threatened default (it didn't default), the entire sukuk market temporarily froze up.
So this included a freeze-up in Indonesian corporate finance markets, Pakistani corporate finance markets, etc.... you can see how this could have a contagious effect, since sukuk are now owned by banks all over the world. Many of them are much safer than the Saudi ones, but a Saudi default would probably cause panic over all of them, even the healthy ones...
Sort of like during the 2008 crisis when nobody would touch any Mortgage Backed Securities and money flew out of all money market funds just because *some* MBS were garbage and *some* money market funds were heavily invested in them.
Are the sizes and the trade and financial dependencies comparable?
1)
Mortgage backed securities became contagious because every U.S. and many European banks relied on them to store cash, and because shadow banks used repos against them as sources of cash liquidity. This literally drained over a trillion dollars of "lubricant" short term cash that keeps the gears of advanced economies turning.
Once that source of cash froze up, financial markets and trade in both regions froze up, triggering a freeze in closely coupled economies like China as well, covering over ~50% of the world's GDP. This was a Great Depression scale, "extinction level" event.
2)
Greece's debt crisis was really bad because it highlighted the deep, structural debt deflation problems caused by the Eurozone "gold standard", which could have spread to Italy, Spain and even France - and partially did spread to them.
Yet despite Greece effectively defaulting and the Eurozone struggling 5+ years with the outcome - and BRExit was in no small part enabled by a populist backlash against the foolish austerity measures the rich elite imposed on the poor populace - still even that didn't trigger a global financial crisis.
3)
The combined GDP of Saudi Arabia, Pakistan and Indonesia is a small percentage of world GDP, and they are mostly "leaf node" countries in the chains of globalized commerce - not root nodes like the U.S., Europe or China.
So unless the Saudis decide to not deliver oil
at all for extended periods of time, in a kamikaze action, I find it hard to see global contagion, unless western banks loaded up on sukuk bonds after the 2008 and Greece experiences, which I find hard to believe without concrete evidence.