Touchscreen does not work on some web site buttons

[darkol]

On old system (armhf Debian 7) with Midori 0.4.8 we set
`

GLOBAL ENVIRONMENT VARS

export MIDORI_TOUCHSCREEN=1
`
On new system (armhf Ubuntu 20.04) with Midori 9.0 (snap install) it seems the same directive has no effect.
On some web app buttons, on touch press the button only changes color as if pressed, but nothing happens.
If I click with a mouse then buttons works as expected.

Please advise.

Thank you and best regards,

Darko