This issue is solved in V9.0.5 
Now executeScript waits at least 5 seconds or the !timeout_wait value (if > 5).
Test macro:
{
"Name": "api1",
"CreationDate": "2024-2-19",
"Commands": [
{
"Command": "echo",
"Target": "runtime=${!runtime}",
"Value": "brown",
"Description": ""
},
{
"Command": "store",
"Target": "15",
"Value": "!timeout_wait",
"Description": "New feature: executeScript waits until !timeout_wait (here: 15s), but at least 5s."
},
{
"Command": "executeScript",
"Target": "var start = new Date().getTime();\nvar delay = 12000; \nwhile (new Date().getTime() < start + delay) {\n \n}\nreturn 3; \n",
"Value": "a",
"Description": "This script takes 12 seconds to run"
},
{
"Command": "echo",
"Target": "runtime=${!runtime}, return value=${a}",
"Value": "blue",
"Description": ""
}
]
}