That's one reason I'm no fan of sterilite or similar plastic containers...they're very flexible & many snakes can get hurt trying to escape these too.
Every kind of enclosure for snakes has it's own pro's & con's though- all require awareness of the shortfalls, and extra vigilance for safety and security.
BTW, in the past I used some NEODESHA cages...they too had sliding glass across the front, but it was only one solid piece, with a hole for a locking peg on either side of the glass. When I converted some furniture cabinets to snake homes, I used the same method to lock the glass sliders in place...in the wood on either side, I drilled a hole for a fat metal peg to make it impossible for any snake occupant to open the sliders, instead of needing any sort of display-case locks.