I know that I can set own template for specific block instance, block type or block position. But I've wanted to set my own default template to all blocks to prevent theme from displaying block title (theme::themesidebox adds it to all blocks, which haven't set custom template).
I've wanted to submit feature requests for that - but I want to be sure if there is no such possibility
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Polish Zikula Team
Bianor Works - my Zikula works on CoZi