Keyboard types two symbols when I press one key

[keke5]

Hi, guys!
I've got a problem with a brand new budget mechanical keyboard from Aliexpress (Aigo A108). For some keys the keyboard types two symbols when I press only one key: the pressed one and the next one. It happens only when I press keys from the following pairs of keys: F6 F7, 78, ui, jk, m,
For example, if I press "u" the keyboard types "ui".
Has anyone come across similar problem? Maybe there is a way to fix this problem with reasonable efforts?

[Findecanor]

I have a suspicion that something could be weird under A45, where the trace from one column goes under the diode that feeds into the other column. Other than that, I'm stumped.

[Sup]

If its brand new you can open a issue with Aliexpress the seller will either help you or you get a refund.