Are you sure you're pressing backspace, not delete or cut (cmd x)
In Preferences there is the option under Type to automatically adjust for a space when cutting and pasting.
Using Cut is the only way I can imagine this could happen.
Excellent! That cured it.
I switched off the automatically adjust space thing and it's not doing it any more.
It was happening when I hit delete, backspace or apple-x.
Many thanks, Eugene.
Very strange - I'm sure that's a bug - what version of Indesign are you using you say InDesign 2014 - is that CC 2014 or just CC? You can check your version under Help>About InDesign
It's CC 2014 (latest - CC says its up to date)
I can replicate the bug in InDesign CC 2014.
Theway I choose to to fix this kind of problem is to Use Find and Replace. Under Find, insert the text or code that you want deleted. Under Replace, insert NOTHING, then select Change All. If you don'twant to replace all instances use the Find Next to keep the coding or use the Change/Find that will delete the code and find the next instance. I use this method all the time to get rid of the double-spaces that are frequently found in word processing files. You can probably do the same thing in your word processing program.
It may sound complicated but it's really quite easy.