Twister YML extra_configs option appears broken with string assignment kconfigs

[MrJonesTyler]

I believe I found a bug in zephyr but would appreciate it if someone could confirm for me.
I'm trying to set the CONFIG_KERNEL_BIN_NAME kconfig option in a sample.yaml file to override the default output file names. I can succesfully do this from the command line with a west build ..... - -DCONFIG_KERNEL_BIN_NAME="LMSW-103" command, but when I try to do the equivalent thing in twister:
extra_configs:
- CONFIG_KERNEL_BIN_NAME="LMSW-103"
I get the following build error:
"malformed string literal in assignment to KERNEL_BIN_NAME"
I've tried with and without escaping the quotes as well as with no quotes at all without success. I believe I'm using zephyr 3.3