Lldb 4.0 does not interpret tab key and other control characters

Question

I start the Ubuntu 16.04 system and install clang-4.0 and lldb-4.0 from the designated repositories:

deb http://apt.llvm.org/xenial/ llvm-toolchain-xenial-4.0 main
deb-src http://apt.llvm.org/xenial/ llvm-toolchain-xenial-4.0 main

For some reason, pressing the tab key introduces a literal tab instead of starting the end of the command, and ctrl-a and ctrl-a enter ^Aand ^Einstead of moving the cursor to the beginning or end of the line, pressing ctrl-c gives ^Cinstead of exiting the program. The arrow keys also work incorrectly. For example, the left arrow gives ^[[D.

Any ideas?