DeepSeek V4 Flash (with effort max) sometimes shows no thinking block even on complex questions – anyone else?

Hey everyone, I’ve been using DeepSeek V4 Flash with thinking mode on and reasoning_effort set to max . Simple questions like “1+1=?” give a direct answer with no thinking block at all. I thought maybe it’s some kind of adaptive thinking, but I don’t see any mention of “adaptive” on the official website. The weird part is: even when I ask questions that clearly need multi-step reasoning (complex coding tasks, longer analysis, etc.), it still sometimes just jumps straight to the final answer with no visible thinking / reasoning_content at all. No thinking block appears in the UI. Has anyone else run into this? Is this expected behavior, or could it be something wrong with my settings / how the effort is being applied? Would appreciate any experiences or tips. Thanks!