It's important to use a supported browser, when using Blogger. Every different browser - and every different browser version - requires different code, to make heavily scripted products like Blogger operate properly on your computer. When you report a problem with using Blogger, one of the most essential questions that you can answer is What browser - and what browser version - are you using? This is not a formality - nor is it pedantic or snarky - it is a serious question , intended to help you to help us.
What Blogger won't tell you