I brought a Magic Keyboard with Numeric Keypad in early 2019. Recently the left-shift left-contrl space keys work very weird. When I press them, they react very "weakly and slowly", it's like there's something like mud beneath them. And if I use some force to push it, it did work, but the rounce is also very weird - slow and stuck.
After a careful check, I can't find anything unusual or dirty under those keys.
Sometimes they're behaving like this in the evening, but getting better the next morning. So I guess it may not be a hardware issue.
What wrong with this keyboard? Does anyone know the reason and how to solve it? I can't find the product page for now and I believe Apple has taken this product offline.
The keyboard I bought looks like this: