Have had the very same problem with ALL the Plastic Latches. I changed all plastic latches over to this metal variety. THEY WILL NEVER BREAK or POP OPEN.
The link below will take you to the writeup on the Hooked Loop, on that page, you can select Catalog to get a view of what the product looks like
Hooked Loop — A Pefect Latch for an Imperfect World
Spring-tensioned hooked loop catches are designed to engage a molded cover lip or flange and will compensate for uneven cover alignment and provide constant tension. Long loops offer a long reach. Holding power is adjustable on mounting, with the distance between catch and cover determining closed tension. Hooked loop catches can be ordered in a wide range of sizes, finishes, with or without mounting holes, and in stainless steel, too. Styles cover all duty ranges.