diff --git a/lua/markview/actions.lua b/lua/markview/actions.lua
index 422b3b3..8cc0407 100644
--- a/lua/markview/actions.lua
+++ b/lua/markview/actions.lua
@@ -1,4 +1,5 @@
 local actions = {};
+local buffer_configs = {};
 
 ---|fS "chunk: Hybrid mode related stuff"
 
@@ -140,10 +141,17 @@ actions.render = function (_buffer, _state, _config)
 	local renderer = require("markview.renderer");
 	local spec = require("markview.spec");
 
-	spec.tmp_setup(_config);
-
 	local buffer = _buffer or vim.api.nvim_get_current_buf();
 
+	-- Persist per-buffer config in Lua-only state: store when provided, retrieve when absent
+	if _config ~= nil then
+		buffer_configs[buffer] = _config;
+	else
+		_config = buffer_configs[buffer];
+	end
+
+	spec.tmp_setup(_config);
+
 	local state = require("markview.state");
 	local buf_state = _state or state.get_buffer_state(buffer, true);