Failure to notify multiple relay rules

A placeholder for a currently uncharacterised failure in model relay. The test failure results in the language panel in first-discovery - relay rules are so:

modelRelay: [{
target: "langIndex",
singleTransform: {
type: "fluid.transforms.indexOf",
array: "

{that}.options.controlValues.lang",
value: "{that}

.model.lang",
offset: 1
}
}, {
target: "firstLangSelected",
singleTransform: {
type: "fluid.transforms.binaryOp",
left: "

{that}.model.langIndex",
operator: "===",
right: 1
}
}, {
target: "lastLangSelected",
singleTransform: {
type: "fluid.transforms.binaryOp",
left: "{that}

.model.langIndex",
operator: "===",
right: "

{that}

.options.controlValues.lang.length"
}
}],

attached to "gpii.firstDiscovery.panel.lang"

the binaryOp relays do not trigger at all in the case we reset the language index back to 1 after setting it to 6.