I have been using Trello for about 4 years and have just experienced this issue for the first time. I go to highlight blocks of text in my cards, in edit mode, and the text will not stay highlighted. As soon as I release the mouse button the text de-selects. Any solutions for fixing this? I can triple click on a block of text and that works but that is not my preferred method of copy/pasting text, which I do all day long as a SEO specialist. Any help would be greatly appreciated! Thanks and happy trails to you!