Crash when starting terminal from within Thunar
To fix: Edit-> Configure Custom Actions-> "Open Terminal Here" and disable "Use Startup Notification"

Configure keyboard layout
The implementation is still work in progress, but as part of wlroots. The easiest workaround is to create or reuse the /etc/environment and add something like:

XKB_DEFAULT_OPTION="keypad:pointerkeys,grp_led:caps,grp:caps_toggle"
XKB_DEFAULT_LAYOUT="us(altgr-intl),de"