Google AppEngine application log assigned to the wrong request log - google-app-engine

Question

When I look at the logs in the Google Log Viewer for my GAE project, I see that often the logs that I write myself in the code are assigned to the wrong request. Most of the time the log is assigned to the request directly after the request that produced the log entry.
As the root of every application log in GAE must be a request, this means that the wrong request is sometimes marked as error, because another request before produced an error, but the log is somehow assigned to the request after that.
I don't really do anything special, I use Ktor as my servlet and have an interceptor that creates a log when an exception occurs before returning status 500.
I use Java logging via SLF4J with the google cloud logging handler, but before that I used logback via SLf4J and had the same problem.
The content of the logs itself is also correct, the returned status of the request, the level of the log entry, the message, everything is ok.
I thought that it may be because I use kotlin and switch coroutine contexts during a single request, but in some cases the point where I write the log and where I send the response are exactly next to each other, so I'm not sure if kotlin has anything to do with it.
My logging.properties:
# To use this configuration, add to system properties : -Djava.util.logging.config.file="/path/to/file"
#
.level = INFO
# it is recommended that io.grpc and sun.net logging level is kept at INFO level,
# as both these packages are used by Stackdriver internals and can result in verbose / initialization problems.
io.grpc.netty.level=INFO
sun.net.level=INFO
handlers=com.google.cloud.logging.LoggingHandler
# default : java.log
com.google.cloud.logging.LoggingHandler.log=custom_log
# default : INFO
com.google.cloud.logging.LoggingHandler.level=INFO
# default : ERROR
com.google.cloud.logging.LoggingHandler.flushLevel=WARNING
# default : auto-detected, fallback "global"
#com.google.cloud.logging.LoggingHandler.resourceType=container
# custom formatter
com.google.cloud.logging.LoggingHandler.formatter=java.util.logging.SimpleFormatter
java.util.logging.SimpleFormatter.format=%1$tY-%1$tm-%1$td %1$tH:%1$tM:%1$tS %4$-6s %2$s %5$s%6$s%n
#optional enhancers (to add additional fields, labels)
#com.google.cloud.logging.LoggingHandler.enhancers=com.example.logging.jul.enhancers.ExampleEnhancer
My logging relevant dependencies:
implementation "org.slf4j:slf4j-jdk14:1.7.30"
implementation "com.google.cloud:google-cloud-logging:1.100.0"
An example logging call:
exception<Throwable> { e ->
logger().error("Error", e)
call.respondText(e.message ?: "", ContentType.Text.Plain, HttpStatusCode.InternalServerError)
}
with logger() being:
import org.slf4j.Logger
import org.slf4j.LoggerFactory
inline fun <reified T : Any> T.logger(): Logger = LoggerFactory.getLogger(T::class.java)
Edit:
An example of the log in Google cloud. The first request has the query parameter GAID=cdda802e-fb9c-47ad-0794d394c913, but as you can see the error log for that request is in the one below, marked in red.