Resonating Lute did not tap mana properly for Subterranean Treasures and I struggled until it timed out, preventing an epic boardwipe <sad face>.

Upon clicking on the lands and selecting the Resonating Lute double-mana option, the pop-up circle asking which colour of mana to add did not appear. Oddly, it appeared on lands to the left later, but by then it was too late. It happened in more than one game, but in the pictured game the problem was exacerbated and I timed out.

I am playing on Linux using Steam with some slow hardware which has never created an issue for me before. My apologies that there is no captured log since my linux situation is making it difficult to find the .log files to upload and I'm giving up now.