Bugzilla

I have extended the scope a little bit (in order to include a couple of more prefixes + some of the security preferences).

I can confirm that issue is verified fixed using Firefox 83.0a1 (BuildId:20201002092536) - The preferences in question are successfully set to true/false and locked (where needed).

Used the following mobileconfig:
```<dict>
 <key>Preferences</key>
  <dict>
         <key>accessibility.force_disabled</key>
   <dict>
           <key>Value</key>
           <integer>1</integer>
           <key>Status</key>
          <string>default</string>
   </dict>
           <key>browser.tabs.warnOnClose</key>
    <dict>
            <key>Value</key>
           <false/>
           <key>Status</key>
           <string>locked</string>
    </dict>
	   <key>print.tab_modal.enabled</key>
     <dict>
	    <key>Value</key>
            <integer>0</integer>
	   <key>Status</key>
	   <string>locked</string>
      </dict>
	    <key>datareporting.policy.dataSubmissionEnabled</key>
	<dict>
	     <key>Value</key>
	     <false/>
	    <key>Status</key>
	    <string>locked</string>
	</dict>
	    <key>media.audioFocus.management</key>
	   <dict>
	      <key>Value</key>
	     <false/>
	     <key>Status</key>
	     <string>locked</string>
	</dict>
	     <key>intl.allow-insecure-text-input</key>
           <dict>
	      <key>Value</key>
	      <false/>
	      <key>Status</key>
	      <string>locked</string>
	</dict>
	      <key>geo.enabled</key>
	    <dict>
	      <key>Value</key>
              <integer>1</integer>
              <key>Status</key>
              <string>locked</string>		
              </dict>
		<key>security.insecure_connection_text.enabled</key>
			<dict>
				<key>Value</key>
				<true/>
				<key>Status</key>
				<string>locked</string>
			</dict>		
                       <key>security.insecure_connection_text.pbmode.enabled</key>
		<dict>
			<key>Value</key>
			<integer>0</integer>
			<key>Status</key>
			<string>locked</string>
		</dict>
		</dict>
  </dict>
```

Sure!

I have extended the scope a little bit (in order to include a couple of more prefixes + some of the security preferences).

I can confirm that issue is verified fixed using Firefox 83.0a1 (BuildId:20201002092536) - The preferences in question are successfully set to true/false and locked (where needed).

Used the following mobileconfig:
```<dict>
 <key>Preferences</key>
  <dict>
         <key>accessibility.force_disabled</key>
   <dict>
           <key>Value</key>
           <integer>1</integer>
           <key>Status</key>
          <string>default</string>
   </dict>
           <key>browser.tabs.warnOnClose</key>
    <dict>
            <key>Value</key>
           <false/>
           <key>Status</key>
           <string>locked</string>
    </dict>
	   <key>print.tab_modal.enabled</key>
     <dict>
	    <key>Value</key>
            <integer>0</integer>
	   <key>Status</key>
	   <string>locked</string>
      </dict>
	    <key>datareporting.policy.dataSubmissionEnabled</key>
	<dict>
	     <key>Value</key>
	     <false/>
	    <key>Status</key>
	    <string>locked</string>
	</dict>
	    <key>media.audioFocus.management</key>
	   <dict>
	      <key>Value</key>
	     <false/>
	     <key>Status</key>
	     <string>locked</string>
	</dict>
	     <key>intl.allow-insecure-text-input</key>
           <dict>
	      <key>Value</key>
	      <false/>
	      <key>Status</key>
	      <string>locked</string>
	</dict>
	      <key>geo.enabled</key>
	    <dict>
	      <key>Value</key>
              <integer>1</integer>
              <key>Status</key>
              <string>locked</string>		
              </dict>
		<key>security.insecure_connection_text.enabled</key>
			<dict>
				<key>Value</key>
				<true/>
				<key>Status</key>
				<string>locked</string>
			</dict>		
                       <key>security.insecure_connection_text.pbmode.enabled</key>
		<dict>
			<key>Value</key>
			<integer>0</integer>
			<key>Status</key>
			<string>locked</string>
		</dict>
		</dict>
  </dict>
```