#416 Alter table freezes the browser window

[Yoji]

Since a year ago, regardless of the adminer version, altering the table freezes the browser for several seconds.
Workaround:

1. click Alter table
2. Make changes
3. Save
   At p. 3 the browser freezes and becomes unresponsible, in bad situations up to 5-10 seconds. In good situations there is no freeze at all (or it's very short) Tested with FF, Chrome and IE on many computers. Any click in the frozen browser windows whites out the window. Waiting times are much longer with tables that has a lot of fields.
   Is this a java problem or it's adminer?? Anybody else has this problem? It's very annoying...
   I can provide a screenshot video also.

[Jakub Vrána]

Can you reproduce it in demo? http://adminer.sourceforge.net/adminer.php?username=

[Dylan Ferris]

In case it helps, I experienced this issue and found it was caused by the LastPass extension.

The problem is worse for tables with many columns, in databases with many large tables.

[Yoji]

Folks, I can confirm that, the LastPass extension is causing trouble and long freezes.
I have LastPass installed in every browser so even if I tried to reproduce the problem in more browsers, the problem persisted.
Does not need to disable/uninstall LastPass, it's enough to sign out. The alter table works fast, without problems.

So, anybody experiencing problems with slow/freezing browser when altering tables, sign out from LastPass.