falkon browser on postmarket : keyboard never appears

hello

using postmarketos edge :

uname -a

Linux samsung-gprimeltexx 6.6.0-msm8916 #2 (closed) SMP PREEMPT Wed Dec 6 13:07:23 UTC 2023 aarch64 Linux

3.20.0_alpha20231219

PRETTY_NAME="postmarketOS edge"

NAME="postmarketOS"

VERSION_ID="edge"

VERSION="edge"

ID="postmarketos"

ID_LIKE="alpine"

HOME_URL="https://www.postmarketos.org/"

SUPPORT_URL="https://gitlab.com/postmarketOS"

BUG_REPORT_URL="https://gitlab.com/postmarketOS/pmaports/issues"

LOGO="postmarketos-logo"

using falkon 23.08.4

using qtweb 5.15.10

problem : the virtual keyboard never shows up

expected behavior : use virtual keyboard to use the browser