Indonesia’s Finance Minister, Purbaya Yudhi Sadewa, recently "floated" the idea of charging ships transit fees through the Strait of Malacca as he was inspired by Iran's maneuverer off the Strait of Hormuz. Apparently, the Indonesia government wanted to try their hands on playing ruffians and imposing "protection money" to boost much needed treasury funds to cover their deficits. The Smart Aleck even tried to drag Singapore and Malaysia into the extortion ring by framing the idea as something that would require coordination with Singapore and Malaysia, rather than a unilateral Indonesian move. Any one can tell that Purbaya is just trying to share the political fallout from US, China, EU etc and to avoid Indonesia appearing as the sole wicked nation that is causing another disruption to global trade. 

The Malacca Strait carries roughly one-fifth to one-quarter of global seaborne trade. Critical examples: