Just after switching off the localization my e phone told me that my SD card was corrupted. The localization was recently used only by Bliss Launcher and maps. Every things seems to get OK after enabling again the localization. It’s a bit strange…
After reading your post, I decided to switch temporarily from Lawnchair to Bliss to look how it is changed in the last month or two. It’s gotten noticeably more stable and smoother! However, I’m still trying to find it’s settings menu, which still seems to be missing.