Renaming layers ends too soon sometimes

[anonymous]

Steps to reproduce:

• have any layer open
• double click to rename it
• if you are in select mode, all letters except (x, d, a) work correctly

( although + and - zoom in and out _and_ get added to the layer name)

• press any of those and you get that letter in the name, once, and drop out of rename mode
• likewise, if you were in xtrude mode, all letters expect s, d, a work correctly