Widget icon custom by css, problems?

Hello community! I have released a small bot and I have changed widget icon by css custom
… so I have encounterd an open bug (not resolved): Style applied during loading - channel-web · Issue #3377 · botpress/botpress · GitHub

anyone use this tecnique to change icon without haveing that problem ?
or i have to think the only solution is hidechat , insert a ‘fake wigdet’ image on my page and menage the click on it?

tnks in advance!!