Cache not validating due to missing txnId

[falcon027]

I just ran into a strange problem where the cache is not validated properly and I get an outdated value returned. I must have misconfigured something because the cache entries "txnId" is not set, so the validation with the contents of the memory is skipped.

In the code below you can see that if "txnId" is not set, the validation is skipped. Does anyone have an idea how to prevent the txnId from being lost?

get(id, options) {
			let value;
			if (this.cache.validated) {
				let entry = this.cache.get(id);
				if (entry) {
					let cachedValue = entry.value;
					if (entry.txnId != null) {  //     <====== entry.txnId is undefined
						value = super.get(id, {
							ifNotTxnId: entry.txnId,
							transaction: options && options.transaction,
						});
						if (value === UNMODIFIED) return cachedValue;
					} // with no txn id we do not validate; this is the state of a cached value after a write before it transacts
					else return cachedValue;    //     <====== because entry.txnId is undefined i get a outdated value from the cache          
				} else value = super.get(id, options);
			} else if (options && options.transaction) {
				return super.get(id, options);
			} else {
				value = this.cache.getValue(id);
				if (value !== undefined) {
					return value;
				}
				value = super.get(id);
			}
			if (
				value &&
				typeof value === 'object' &&
				!options &&
				typeof id !== 'object'
			) {
				let entry = this.cache.setValue(id, value, this.lastSize >> 10);
				if (this.useVersions) {
					entry.version = getLastVersion();
				}
				if (this.cache.validated) entry.txnId = getLastTxnId();
			}
			return value;
		}

Not sure if this helps but here are my database settings:

   let newObject = open({
        path: objectsPath,
        compression: false,
        dupSort: false,
        cache: {
            validated: true,
            clearKeptInterval: 100,
            cacheSize: 200
        },
        maxDbs: 1,
        eventTurnBatching: true,
        txnStartThreshold: 5,
        commitDelay: 0, 
        noMemInit: true, 
        keyEncoding: "ordered-binary",
        remapChunks: false,
        pageSize: 16384,
        useWritemap: false, 
        safeRestore: true,
        maxReaders: 100,
        encoding: "json",
    });

Thanks in advance for your help.