this.form.submit() refreshes the page, clears and ignores selection from dropdown (Selenium, Python, Docker)

I’m developing a data scraper using Selenium and Python. This data scraper is supposed to be run on Digital Ocean Kubernetes pod as a Docker image.

Local scenario:

1. I build the Docker image.
2. I run the Docker image successfully.
3. Data scraper selects an option from dropdown.
4. this.form.submit() gets executed.
5. Page refreshes and selected option gets applied, just as expected.

Server scenario:

1. I build the Docker image.
2. I push it to the server and it starts.
3. Data scraper selects an option from dropdown.
4. this.form.submit() gets executed.
5. Page refreshes and the option gets cleared.

Background: Kubernetes droplet has 8gb RAM, 4CPUs, so the resources doesn’t seem to be the problem. It doesn’t seem to have anything to do with timings as well, because I have tried all the delays possible - implicit, explicit and Javascript injection to wait before form submission.

The unbeatable problem: Why does webdriver browser of the same Docker image execute this.form.submit() without any problems on my local machine, but can’t successfully execute this.form.submit() within a pod of Kubernetes?

Side note: I have noticed that whenever a cookies consent dialog appears (which happens rarely for unknown reasons to me) and the scraper accepts the cookies, this.form.submit() executes successfully and option gets selected after the page refresh.

I have been trying to solve this for almost a week now and without any success, I’m hoping to get an answer here. ANY answer is highly appreciated and I will be as responsive as possible to let you know about the outcomes.