An Ignited TNT that is ignited on another TNT on a Bedrock and Obsidian will fall

The Ignited TNT on bedrock and obsidian if it is ignited on another TNT Will Fall

Steps to reproduce bug :
1.) Get a TNT
2.) Place it on a bedrock and obsidian (be sure that it has another TNT beside it)

3.) Ignite it with Flint and Steel or etc. (YOU WILL OBSERVED THAT IT WILL FALL)