Can I face issues at immigration re-entering Thailand after a visa run for an education visa?

If i were to visit my home country and do my visa run there for an education visa for advanced Thai language course, is it possible for me to have problems at immigration upon re-entry?

Background info:

- Australian passport

- Been in Thailand since Sep. 2017

- Was using tourist visas for about 1y 3m until Immigration gave me a warning at DMK after a visa run to KL.

- So I got an Non-Immigrant Education visa

- After my 9mth. beginners thai lang. course I would like to move up to the advanced thai lang. course which requires a visa run

- Looking to visit home (🇦🇺) in approx. 3months and do my visa run at the same time

- Looking to fly direct from Kuala Lumpur KUL to Surat Thani URT on return trip to Thailand.

Is there a chance I may be denied entry even though I have a proper visa? Im not working in the country but I am mainly here for boxing.

Ive heard about immigration also questioning/testing your thai language capabilities, has anyone had this experience?

Thank you in advance for any advice! 🙂🙏🏽