clang-format single line if

If I build clang-format from tip of master and run it
using this .clang-format file

AllowShortIfStatementsOnASingleLine: Always

it will change this single line if statement

if (x) { x++; }

into this three line if statement

if (x) {

How do I keep it as one line?

If I delete the braces it stays on one line, but the
style guide for the code I work on says the braces are
required. If I modify my .clang-format file to be

AllowShortIfStatementsOnASingleLine: Always
AllowShortBlocksOnASingleLine: Always

it stays on one line, but I don’t want all short blocks
on a single line, just the if statement block. Any ideas?

Could I ask you to log a defect over in to this effect, The examples using AllowShortIfStatementsOnASingleLine don’t include braces