Agree 100%. My workaround is similar. I use the Peovi cage and on the bottom of the cage I have a quickfit socket for my tripod. Together that gives me my height. It makes for a very tight fit though. 73 de VK1MF.
It currently goes for 180 USD, which is a bit much for an 11-liter bag. The top-mounted radio seems nice in theory, but I wonder how well the system works when there's nothing to prop up the top-heavy bag. Tent stakes (I keep a few tenpenny nails in my outdoor kits as auxiliary stakes) and guy lines?
www.hamradio.co.uk/accessories-by-manufacturer-mydel-accessories/mydel/antenna-bracket-holder-stand-for-lc-192-backpack-bag-icom-705-ic-705-bnc-so239-pd-12872.php You can also get it on eBay
I just purchased an IC-705 with the LC-192 bag. I have to agree with Are - it does fall behind the bar if you insert it properly so it rests on the bag’s rails. If you have different info please post it. I’m taking his advice and ordering a MBF-705 bracket, the radio could use it anyways and I’m not thrilled with the bulkiness of the otherwise excellent Nifty brand stand for this purpose.